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Cheap flights from St. Louis (STL) to Portugal from $422

This is the cheapest one-way flight price found by a Cheapflights user in the last 72 hours by searching for a flight departing on 8/3. Fares are subject to change and may not be available on all flights or dates of travel. Click the price to replicate the search for this deal.
STL — LIS
Jun 7 — Jun 141
From?
To?
Fri 6/7
Fri 6/14
1 adult, Economy
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How far in advance should I book a flight from St. Louis to Portugal?

Users have found that booking a flight from St. Louis to Portugal at least 41 days early can save you up to 170% on average compared to booking a flight this week. If booking 41 days before your flight isn’t an option for you, users have found flights from St. Louis to Portugal for as little as $1,086 when booking for a departure date within the next two weeks. You can also check prices now. Some users have found airline tickets as low as $1,229 for flights departing within the next 3 days.

What is the cheapest month to fly from St. Louis to Portugal?

Flights from St. Louis to Portugal lean towards being more expensive in May. Prices are generally better when you fly from St. Louis to Portugal in January, with the cheapest ticket starting at $457.

What is the cheapest time of day to fly from STL to PT?

When flying from St. Louis to Portugal, the time of day you decide to fly out makes little to no difference towards the overall price you’ll pay on tickets.

Cheap Delta flights from St. Louis to Portugal

Explore cheap flight options specifically provided by Delta for the route between St. Louis and Portugal. Find affordable fares and compare prices with other airlines to secure the best deal for your journey. Over the last 7 days, Cheapflights users made 2,810,401 searches. Data last updated June 2, 2024.
Take a look at some of the lowest-priced Delta flights heading from St. Louis to Portugal. Make sure to check back often as deals are often changing.
Tue 8/133:28 pmSTL - LIS
2 stops17h 22mDelta
Wed 8/2111:40 amLIS - STL
2 stops17h 59mDelta
Deal found 6/1$739
Wed 8/711:28 amSTL - LIS
2 stops15h 22mDelta
Wed 8/145:40 amLIS - STL
2 stops23h 59mDelta
Deal found 6/2$846
Tue 9/103:55 pmSTL - OPO
2 stops17h 35mDelta
Fri 9/209:15 amOPO - STL
2 stops20h 24mDelta
Deal found 6/2$886
Mon 9/93:55 pmSTL - OPO
2 stops34h 30mDelta
Fri 9/209:15 amOPO - STL
2 stops17h 32mDelta
Deal found 6/2$887
Fri 9/65:27 pmSTL - OPO
2 stops16h 03mDelta
Fri 9/209:15 amOPO - STL
2 stops17h 32mDelta
Deal found 6/2$936
Sun 9/83:28 pmSTL - OPO
2 stops18h 02mDelta
Sat 9/2111:25 amOPO - STL
2 stops32h 00mDelta
Deal found 6/2$938
Mon 9/910:13 amSTL - OPO
2 stops40h 12mDelta
Sat 9/216:30 amOPO - STL
2 stops20h 51mDelta
Deal found 6/2$940
Sun 8/116:30 amSTL - LIS
2 stops20h 20mDelta
Sun 8/185:00 amLIS - STL
2 stops15h 38mDelta
Deal found 6/1$956
Fri 9/62:29 pmSTL - OPO
2 stops19h 01mDelta
Sat 9/2111:25 amOPO - STL
2 stops32h 00mDelta
Deal found 6/2$988

Cheap American Airlines flights from St. Louis to Portugal

Explore cheap flight options specifically provided by American Airlines for the route between St. Louis and Portugal. Find affordable fares and compare prices with other airlines to secure the best deal for your journey. Over the last 7 days, Cheapflights users made 2,810,401 searches. Data last updated June 2, 2024.
To aid your search, here are some of the cheapest American Airlines flights we've found from St. Louis to Portugal. Check back soon if you're not seeing flights that suit your needs.
Mon 7/159:20 amSTL - LIS
2 stops17h 45mAmerican Airlines
Mon 7/2211:05 amLIS - STL
2 stops16h 49mAmerican Airlines
Deal found 6/1$870
Wed 8/712:55 pmSTL - LIS
1 stop14h 10mAmerican Airlines
Wed 8/1411:05 amLIS - STL
1 stop15h 54mAmerican Airlines
Deal found 6/2$878
Sat 9/1411:38 amSTL - OPO
2 stops13h 57mAmerican Airlines
Thu 9/268:15 amOPO - STL
2 stops19h 54mAmerican Airlines
Deal found 5/31$916
Mon 9/96:22 pmSTL - OPO
3 stops31h 13mAmerican Airlines
Sat 9/218:15 amOPO - STL
2 stops30h 45mAmerican Airlines
Deal found 6/1$929

Cheap St. Louis to Portugal flights in June & July 2024

Find cheap flight options from St. Louis to Portugal specifically for the months of June and July 2024. Explore affordable fares based on user searches. Over the last 7 days, Cheapflights users made 2,810,401 searches. Prices were last updated on June 2, 2024.
Check out some of the best flight deals from St. Louis to Portugal in 2024. More deals are always being added, so be sure to check back regularly.
Wed 6/266:00 amSTL - LIS
2 stops22h 10mBritish Airways
Tue 7/27:15 amLIS - STL
2 stops19h 41mBritish Airways
Deal found 6/1$937
Sun 6/232:16 pmSTL - LIS
2 stops18h 34mDelta
Wed 7/35:40 amLIS - STL
2 stops17h 40mDelta
Deal found 6/2$955
Tue 6/186:00 amSTL - LIS
2 stops22h 10mBritish Airways
Wed 6/264:30 pmLIS - STL
2 stops30h 48mBritish Airways
Deal found 6/1$965
Thu 6/68:25 amSTL - LIS
1 stop20h 05mUnited Airlines
Sat 6/159:45 amLIS - STL
2 stops31h 12mUnited Airlines
Deal found 6/1$997
Sun 6/236:08 pmSTL - LIS
2 stops23h 07mBritish Airways
Wed 7/36:45 pmLIS - STL
2 stops29h 15mBritish Airways
Deal found 6/1$1,028
Thu 6/66:11 amSTL - LIS
2 stops19h 49mDelta
Sat 6/155:40 amLIS - STL
2 stops22h 15mDelta
Deal found 6/1$1,044
Wed 6/268:25 amSTL - LIS
1 stop20h 05mUnited Airlines
Tue 7/211:25 amLIS - STL
2 stops28h 58mUnited Airlines
Deal found 6/1$1,060
Wed 6/264:05 pmSTL - LIS
2 stops19h 45mMultiple Airlines
Tue 7/27:25 pmLIS - STL
3 stops30h 36mMultiple Airlines
Deal found 6/1$1,113
Sat 6/15:31 pmSTL - LIS
2 stops39h 59mLufthansa
Sat 6/84:25 pmLIS - STL
1 stop27h 05mLufthansa
Deal found 5/31$1,142

St. Louis to Portugal 2024 flight deals

Discover exclusive flight deals for travel between St. Louis and Portugal in 2024. Find excellent offers based on user searches. Over the last 7 days, Cheapflights users made 2,810,401 searches. Data last updated June 2, 2024.
Check out some of the best flight deals from St. Louis to Portugal in 2024. More deals are always being added, so be sure to check back regularly.
Mon 12/26:30 amSTL - LIS
2 stops20h 30mVirgin Atlantic
Thu 12/1210:00 amLIS - STL
2 stops19h 35mVirgin Atlantic
Deal found 6/1$497
Mon 12/210:40 amSTL - LIS
1 stop16h 40mUnited Airlines
Thu 12/1211:00 amLIS - STL
2 stops29h 27mUnited Airlines
Deal found 6/1$509
Mon 12/25:37 pmSTL - LIS
2 stops33h 43mUnited Airlines
Thu 12/1211:00 amLIS - STL
2 stops29h 27mUnited Airlines
Deal found 6/1$513
Mon 12/24:10 pmSTL - LIS
1 stop11h 10mAir Canada
Thu 12/1211:00 amLIS - STL
2 stops28h 53mAir Canada
Deal found 6/1$516
Tue 12/310:00 amSTL - LIS
2 stops16h 00mKLM
Fri 12/1311:15 amLIS - STL
2 stops15h 24mKLM
Deal found 5/31$517
Wed 12/41:27 pmSTL - LIS
2 stops13h 53mMultiple Airlines
Fri 12/135:00 amLIS - STL
2 stops40h 23mMultiple Airlines
Deal found 6/1$518
Tue 12/31:27 pmSTL - LIS
2 stops15h 03mUnited Airlines
Fri 12/135:00 amLIS - STL
1 stop14h 55mUnited Airlines
Deal found 6/1$519
Mon 12/22:43 pmSTL - LIS
2 stops12h 22mAmerican Airlines
Tue 12/108:25 amLIS - STL
2 stops16h 39mAmerican Airlines
Deal found 5/31$520
Tue 12/39:00 amSTL - LIS
1 stop17h 00mDelta
Tue 12/1010:00 amLIS - STL
1 stop16h 50mDelta
Deal found 5/31$521

St. Louis to Portugal flights leaving soon

Find last-minute flight options from St. Louis to Portugal for spontaneous travel. Discover available flights and compare prices based on user searches. Secure great deals and offers for spontaneous trips with quick booking options. Over the last 7 days, Cheapflights users made 2,810,401 searches. Data last updated June 2, 2024.
Book one of these great deals on flights from St. Louis to Portugal. Users should examine the flight details to ensure there are no surprises.
Thu 6/68:25 amSTL - LIS
1 stop20h 05mUnited Airlines
Sat 6/159:45 amLIS - STL
2 stops31h 12mUnited Airlines
Deal found 6/1$997
Thu 6/66:11 amSTL - LIS
2 stops19h 49mDelta
Sat 6/155:40 amLIS - STL
2 stops22h 15mDelta
Deal found 6/1$1,044
Thu 6/68:25 amSTL - LIS
1 stop20h 05mUnited Airlines
Sat 6/157:30 amLIS - STL
1 stop36h 00mUnited Airlines
Deal found 6/1$1,533

One-way flights to Portugal from St. Louis

Search for one-way flight options from St. Louis to Portugal. Find affordable one-way fares based on user searches. Compare prices and availability to plan your one-way journey according to your preferred dates and budget. Over the last 7 days, Cheapflights users made 2,810,401 searches. Data last updated June 2, 2024.
Take a look at some of the one-way flights we've detected from St. Louis to Portugal. Users can also find round-trip St. Louis to Portugal flights by using the search form above.
Sat 8/37:33 pmSTL - LIS
2 stops45h 37mMultiple Airlines
Deal found 6/1$422
Sat 8/38:02 pmSTL - LIS
3 stops45h 08mMultiple Airlines
Deal found 6/1$517
Wed 7/248:05 amSTL - OPO
2 stops16h 50mUnited Airlines
Deal found 6/1$535
Sat 9/285:05 pmSTL - OPO
2 stops16h 25mAir France
Deal found 6/1$546
Sat 6/298:02 pmSTL - LIS
3 stops40h 18mMultiple Airlines
Deal found 6/1$589
Sat 9/285:30 pmSTL - OPO
1 stop10h 15mUnited Airlines
Deal found 6/1$614
Wed 7/245:30 pmSTL - OPO
3 stops31h 25mUnited Airlines
Deal found 6/1$649
Sat 8/312:00 pmSTL - LIS
1 stop17h 45mMultiple Airlines
Deal found 6/1$686
Sat 6/294:05 pmSTL - LIS
2 stops35h 15mAir Canada
Deal found 6/1$774

Find flights from St. Louis to Portugal within your budget

Customize your flight search to find flights from St. Louis to Portugal that fit within your specific budget. Explore options based on user searches and filter the results based on your desired price range. Find flights that match your budget for a cost-effective journey. Over the last 7 days, Cheapflights users made 2,810,401 searches. Data last updated June 2, 2024.

Fly from

Any airport

Fly to

Any airport

Budget

$739 - $1,101

Route

Depart

Return

Price

Lambert-St LouisLisbon Humberto Delgado

STL - LIS

STLLIS

Lambert-St Louis

Tue 8/13

2 stops17h 22m

Lisbon Humberto Delgado

Wed 8/21

2 stops17h 59m

$739

Lambert-St LouisLisbon Humberto Delgado

STL - LIS

STLLIS

Lambert-St Louis

Tue 8/13

1 stop14h 08m

Lisbon Humberto Delgado

Wed 8/21

2 stops24h 58m

$743

Lambert-St LouisPorto

STL - OPO

STLOPO

Lambert-St Louis

Sun 9/22

2 stops20h 10m

Porto

Wed 10/2

2 stops17h 20m

$812

Lambert-St LouisLisbon Humberto Delgado

STL - LIS

STLLIS

Lambert-St Louis

Mon 7/15

2 stops17h 45m

Lisbon Humberto Delgado

Mon 7/22

2 stops16h 49m

$870

Lambert-St LouisPorto

STL - OPO

STLOPO

Lambert-St Louis

Wed 9/11

2 stops32h 55m

Porto

Fri 9/20

2 stops17h 20m

$870

Lambert-St LouisPorto

STL - OPO

STLOPO

Lambert-St Louis

Wed 9/11

2 stops32h 55m

Porto

Fri 9/20

1 stop13h 30m

$901

Lambert-St LouisPorto

STL - OPO

STLOPO

Lambert-St Louis

Sun 9/22

2 stops22h 40m

Porto

Wed 10/2

3 stops34h 07m

$902

Lambert-St LouisPorto

STL - OPO

STLOPO

Lambert-St Louis

Mon 9/9

2 stops33h 15m

Porto

Sun 9/22

2 stops29h 23m

$1,082

Lambert-St LouisLisbon Humberto Delgado

STL - LIS

STLLIS

Lambert-St Louis

Sat 7/13

2 stops15h 56m

Lisbon Humberto Delgado

Sat 7/20

2 stops16h 59m

$1,101

Flights are sorted by cheapest first

Deals found on 6/1

No data available for this route at this time. Please check back soon.

Best time to book a flight from St. Louis to Portugal

Have a flexible travel schedule? Discover the best time to fly to Portugal from St. Louis with our price prediction graph.
Estimated round-trip price
Rates are based on past data. Find the cheapest month and day to book your flight based on your travel requirements, then search for cheap deals.

Reviews of airlines servicing Portugal

Get insights into the airlines that provide service to Portugal. Read reviews, discover amenities, and learn about the overall travel experience offered by airlines. Use this information to make informed decisions when choosing an airline for your flight to Portugal. Reviews last updated June 2, 2024.
To help decide which airline to fly from St. Louis to Portugal, see what other customers have to say about Delta, American Airlines and Air Canada. In addition to providing an overall rating, users have also rated airlines in terms of entertainment options, comfort, food, crew/service, and boarding process.
Delta
8.0
Very good
10,410 reviews
Check prices

Overall

8.0

Comfort

7.9

Crew

8.6

Food

7.4

Boarding

8.2

Entertainment

8.0

Reviews

1 / 10

Bad experience with the staff boarding the gate. I couldn’t board with my carry on, personal item and a funny bag. I had to put my passport inside my pockets and put the funny bag inside the personal item. Then after passing the staff pull out everything again.

Delta
8.0
Very good
10,410 reviews
Delta
8.0
Very good
10,410 reviews
Check prices

Overall

8.0

Comfort

7.9

Crew

8.6

Food

7.4

Boarding

8.2

Entertainment

8.0

Reviews

1 / 10

Bad experience with the staff boarding the gate. I couldn’t board with my carry on, personal item and a funny bag. I had to put my passport inside my pockets and put the funny bag inside the personal item. Then after passing the staff pull out everything again.

Air France
7.5
Good
1,728 reviews
Delta
8.0
Very good
10,410 reviews
Check prices

Overall

8.0

Comfort

7.9

Crew

8.6

Food

7.4

Boarding

8.2

Entertainment

8.0

Reviews

1 / 10

Bad experience with the staff boarding the gate. I couldn’t board with my carry on, personal item and a funny bag. I had to put my passport inside my pockets and put the funny bag inside the personal item. Then after passing the staff pull out everything again.

Turkish Airlines
7.4
Good
3,711 reviews
Delta
8.0
Very good
10,410 reviews
Check prices

Overall

8.0

Comfort

7.9

Crew

8.6

Food

7.4

Boarding

8.2

Entertainment

8.0

Reviews

1 / 10

Bad experience with the staff boarding the gate. I couldn’t board with my carry on, personal item and a funny bag. I had to put my passport inside my pockets and put the funny bag inside the personal item. Then after passing the staff pull out everything again.

United Airlines
7.4
Good
10,755 reviews
Delta
8.0
Very good
10,410 reviews
Check prices

Overall

8.0

Comfort

7.9

Crew

8.6

Food

7.4

Boarding

8.2

Entertainment

8.0

Reviews

1 / 10

Bad experience with the staff boarding the gate. I couldn’t board with my carry on, personal item and a funny bag. I had to put my passport inside my pockets and put the funny bag inside the personal item. Then after passing the staff pull out everything again.

American Airlines
7.3
Good
14,260 reviews
Delta
8.0
Very good
10,410 reviews
Check prices

Overall

8.0

Comfort

7.9

Crew

8.6

Food

7.4

Boarding

8.2

Entertainment

8.0

Reviews

1 / 10

Bad experience with the staff boarding the gate. I couldn’t board with my carry on, personal item and a funny bag. I had to put my passport inside my pockets and put the funny bag inside the personal item. Then after passing the staff pull out everything again.

Related info for your journey

Find useful and relevant information for your journey from St. Louis to Portugal. Access travel guides, tips, and recommendations to enhance your travel experience. Get information about local attractions, weather, transportation options, and more.

  • What airport do you fly from for flights from St. Louis to Portugal?

    Lambert-St Louis (STL), located 12.7 mi from the city center, is the airport you fly out of when you book flights from St. Louis to Portugal.

  • Can I find flights from St. Louis to Portugal for under $800 on Cheapflights?

    Yes, there are multiple flights from St. Louis to Portugal for under $800. The cheapest flight booked recently is on Delta for just $739, but on average you can expect to pay $870.

  • Are there last-minute flights available from St. Louis to Portugal for under $1,000?

    There are currently 3+ open flights from St. Louis to Portugal within the next 7 days for less than $1,000.

  • What are the cheapest airlines to fly from St. Louis to Portugal one-way?

    For one-way options, check prices for United Airlines. According to our data, you can fly for as low as $535. Users have also found prices from $546 and $774 on Air France and Air Canada, respectively.

  • What are the most popular routes from St. Louis to Portugal?

    When deciding which route to take from St. Louis to Portugal consider Lambert-St Louis - Lisbon Humberto Delgado, Lambert-St Louis - Porto or Lambert-St Louis - Lajes as they are the most popular.

  • What does STL to LIS mean?

    Lambert-St Louis Airport is STL and Lisbon Humberto Delgado Airport is LIS. These codes are created by the International Air Transport Association (IATA) and airlines use them to identify the departing and arrival airports in the flight routes they service. Porto Airport (OPO), Faro Airport (FAO), Funchal Madeira Airport (FNC), Ponta Delgada Nordela Airport (PDL), Lajes Airport (TER) are other airports near this flight route and their unique identifiers/IATA codes.

  • Can I find deals for flights from St. Louis to Portugal that include extra baggage allowance?

    The amount of baggage you can bring on your St. Louis to Portugal flight depends on the airline and the type of fare you've chosen. After entering your flight details, you'll be able to view the specific baggage policies for each deal in the search results. Keep in mind that certain deals may offer additional baggage allowance.

  • Can I find deals on flights from St. Louis to Portugal with specific airlines?

    Yes, Cheapflights allows you to browse and filter St. Louis to Portugal flight deals by airline. After entering your origin and destination, use the available filters to view flights offered by airlines.

  • Can I find deals for flights from St. Louis to Portugal that include hotel bookings?

    Yes. In addition to deals on St. Louis to Portugal flights, Cheapflights offers vacation packages that include both flights and hotel.

  • How can I find direct flights from St. Louis to Portugal?

    After entering your origin and destination, apply the non-stop filter on the search result page to find direct flights from St. Louis to Portugal.

  • Can I find deals for business class flights from St. Louis to Portugal?

    Yes. Cheapflights offers flight deals from St. Louis to Portugal by cabin class. In addition to browsing deals, you can also filter by cabin class on the search results page after making a search.

  • Can I find deals for flights from St. Louis to Portugal that allow pets onboard?

    Many airlines flying from St. Louis to Portugal offer the option to travel with pets. After selecting a flight deal, you can find more information about the airline's pet policy on their official website or by contacting the airline directly. Please note that additional fees and restrictions may apply.

  • Can I find deals on last-minute flights from St. Louis to Portugal?

    Yes, you can often find last-minute deals on St. Louis to Portugal flights on Cheapflights. However, these deals can vary and may not always be available. We recommend checking back frequently or signing up for price alerts for the most up-to-date deals.

  • How recently were the St. Louis to Portugal flight deals updated?

    The St. Louis to Portugal flight deals you see on this page were last updated on 6/1.

  • What are the most popular airlines that fly from St. Louis to Portugal?

    When booking a flight from St. Louis to Portugal, you may want to consider flying on American Airlines, Air Canada or British Airways as they are the most popular for this route.

  • What is the cheapest month to book a flight from St. Louis to Portugal?

    Currently, December is the cheapest month in which you can book a flight from St. Louis to Portugal (average of $597). Flying from St. Louis to Portugal in June is currently the most expensive (average of $1,194). There are several factors that can impact the price of a flight, so comparing airlines, departure airports and flight times can provide users with more options.

See more FAQs

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Alternative routes for St. Louis to Portugal
See prices for flight routes from nearby airports that may be better suited for you.

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Top 8 airlines flying from St. Louis to Portugal

Discover the top 8 airlines that operate flights from St. Louis to Portugal. Compare their services, reliability, and customer satisfaction ratings to choose the airline that best suits your travel preferences and needs. Over the last 7 days, Cheapflights users made 2,810,401 searches. Data last updated June 2, 2024.
AirlineCheapestAverageFlexibilityOn-time
LufthansaCheapest$537Average$1,040FlexibilityNo cancel feeOn-time76%
Search Lufthansa flights
British AirwaysCheapest$554Average$892FlexibilityNo cancel feeOn-time70%
Search British Airways flights
United AirlinesCheapest$557Average$968FlexibilityNo cancel feeOn-time69%
Search United Airlines flights
DeltaCheapest$601Average$1,036FlexibilityNo cancel feeOn-timeN/A
Search Delta flights
IberiaCheapest$624Average$983FlexibilityNo cancel feeOn-time77%
Search Iberia flights
American AirlinesCheapest$625Average$1,076FlexibilityNo cancel feeOn-time71%
Search American Airlines flights
KLMCheapest$666Average$876FlexibilityNo cancel feeOn-time75%
Search KLM flights
Air CanadaCheapest$846Average$1,285FlexibilityNo cancel feeOn-time67%
Search Air Canada flights
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Search flights from St. Louis to Portugal by cabin class

Find flights from St. Louis to Portugal, based on your preferred cabin class, be it economy, premium economy, business, or first class.
First Class
Business Class
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Fly with Cheapflights

Find the best flight deals on Cheapflights, where travelers can enjoy low prices and a wide availability of flights to their desired destinations.

How does Cheapflights help users find flights from St. Louis to Portugal?

Cheapflights helps you search for flights from St. Louis to Portugal via 900+ travel sites so you don’t have to. After performing a flight search, users can also filter their flight selection by filtering for price, number of stops, airlines, and so on.

Why should you use Cheapflights to find cheap flight tickets from St. Louis to Portugal?

Cheapflights simply makes it quick and affordable to book flights from St. Louis to Portugal by bringing together all flight options from hundreds of airlines and agencies online — and put it in one place for you to choose from. Plus, Cheapflights is 100% free to use for all.

Can Cheapflights find flights from St. Louis to Portugal with no change fees?

Users can book flights with no change fees policies with our dedicated filters. Book flights from St. Louis to Portugal flexibly with Cheapflights today.

Can Cheapflights notify me if prices for flights from St. Louis to Portugal become cheaper?

Yes, Cheapflights has a feature called Price Alert, which notifies users when flight prices change. Track prices for your flight to Portugal from St. Louis today and book when prices fit your budget.

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Millions of people come to us for their flight needs every year. We help make travel planning easy by providing useful insights and data-driven graphs that can inform your decisions.
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