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Cheap flights from St. Louis (STL) to Portugal from $275

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 9/22. 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 Air Canada flights from St. Louis to Portugal

Explore cheap flight options specifically provided by Air Canada 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 Air Canada flights heading from St. Louis to Portugal. Make sure to check back often as deals are often changing.
Fri 11/294:10 pmSTL - LIS
1 stop11h 10mAir Canada
Tue 12/105:00 amLIS - STL
2 stops34h 53mAir Canada
Deal found 5/31$568
Fri 11/294:10 pmSTL - LIS
2 stops35h 10mAir Canada
Tue 12/105:00 amLIS - STL
2 stops34h 53mAir Canada
Deal found 6/1$570
Fri 11/294:10 pmSTL - LIS
2 stops35h 10mAir Canada
Thu 12/1211:00 amLIS - STL
2 stops28h 53mAir Canada
Deal found 6/1$578
Fri 11/294:10 pmSTL - LIS
2 stops35h 10mAir Canada
Thu 12/1211:00 amLIS - STL
2 stops28h 53mAir Canada
Deal found 6/1$579
Fri 11/294:10 pmSTL - LIS
2 stops35h 10mAir Canada
Sun 12/155:00 amLIS - STL
2 stops34h 53mAir Canada
Deal found 6/1$618
Fri 11/2910:40 amSTL - LIS
1 stop16h 40mAir Canada
Sat 12/145:00 amLIS - STL
2 stops34h 53mAir Canada
Deal found 5/31$619
Fri 11/294:10 pmSTL - LIS
2 stops35h 10mAir Canada
Sat 12/145:00 amLIS - STL
2 stops34h 53mAir Canada
Deal found 6/1$620
Wed 10/1610:10 amSTL - LIS
2 stops17h 10mAir Canada
Thu 10/2411:25 amLIS - STL
1 stop15h 40mAir Canada
Deal found 6/1$702
Wed 10/1612:00 pmSTL - LIS
1 stop15h 20mAir Canada
Thu 10/2412:50 pmLIS - STL
1 stop32h 30mAir Canada
Deal found 6/1$723

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.
To aid your search, here are some of the cheapest Delta flights we've found from St. Louis to Portugal. Check back soon if you're not seeing flights that suit your needs.
Fri 11/2911:51 amSTL - LIS
2 stops14h 09mDelta
Fri 12/1311:15 amLIS - STL
2 stops15h 16mDelta
Deal found 5/31$571
Fri 11/297:00 amSTL - LIS
1 stop19h 00mDelta
Sun 12/1510:00 amLIS - STL
1 stop28h 53mDelta
Deal found 5/31$621
Fri 11/297:00 amSTL - LIS
1 stop19h 00mDelta
Sun 12/1510:00 amLIS - STL
1 stop28h 53mDelta
Deal found 6/1$622
Fri 11/297:00 amSTL - LIS
1 stop19h 00mDelta
Sun 12/1510:00 amLIS - STL
1 stop28h 53mDelta
Deal found 6/1$623
Wed 9/183:18 pmSTL - LIS
2 stops17h 32mDelta
Thu 9/265:40 amLIS - STL
2 stops22h 17mDelta
Deal found 6/1$736
Tue 8/133:28 pmSTL - LIS
2 stops17h 22mDelta
Wed 8/2111:40 amLIS - STL
2 stops17h 59mDelta
Deal found 6/1$739

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

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.
Sun 9/226:42 pmSTL - LIS
2 stops42h 28mMultiple Airlines
Deal found 6/1$275
Sun 11/33:55 pmSTL - LIS
1 stop13h 30mLufthansa
Deal found 6/1$404
Sun 11/35:37 pmSTL - LIS
2 stops23h 53mLufthansa
Deal found 6/1$408
Sat 8/37:33 pmSTL - LIS
2 stops45h 37mMultiple Airlines
Deal found 6/1$422
Sun 11/38:25 amSTL - LIS
1 stop20h 05mUnited Airlines
Deal found 6/2$482
Sun 11/311:10 amSTL - LIS
3 stops26h 05mMultiple Airlines
Deal found 6/1$491
Sun 9/227:40 amSTL - LIS
3 stops28h 10mMultiple Airlines
Deal found 6/1$498
Mon 6/2412:15 pmSTL - LIS
2 stops13h 45mMultiple Airlines
Deal found 6/2$507
Sat 8/38:02 pmSTL - LIS
3 stops45h 08mMultiple Airlines
Deal found 6/1$517

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

$568 - $949

Route

Depart

Return

Price

Lambert-St LouisLisbon Humberto Delgado

STL - LIS

STLLIS

Lambert-St Louis

Fri 11/29

1 stop11h 10m

Lisbon Humberto Delgado

Tue 12/10

2 stops34h 53m

$568

Lambert-St LouisLisbon Humberto Delgado

STL - LIS

STLLIS

Lambert-St Louis

Fri 11/29

2 stops35h 10m

Lisbon Humberto Delgado

Tue 12/10

2 stops40h 23m

$569

Lambert-St LouisLisbon Humberto Delgado

STL - LIS

STLLIS

Lambert-St Louis

Fri 11/29

2 stops14h 09m

Lisbon Humberto Delgado

Fri 12/13

2 stops15h 16m

$571

Lambert-St LouisLisbon Humberto Delgado

STL - LIS

STLLIS

Lambert-St Louis

Fri 11/29

1 stop11h 14m

Lisbon Humberto Delgado

Fri 12/13

2 stops16h 39m

$572

Lambert-St LouisLisbon Humberto Delgado

STL - LIS

STLLIS

Lambert-St Louis

Fri 11/29

1 stop13h 40m

Lisbon Humberto Delgado

Fri 12/13

1 stop14h 55m

$607

Lambert-St LouisLisbon Humberto Delgado

STL - LIS

STLLIS

Lambert-St Louis

Sun 11/3

2 stops29h 23m

Lisbon Humberto Delgado

Sat 11/9

2 stops33h 16m

$608

Lambert-St LouisLisbon Humberto Delgado

STL - LIS

STLLIS

Lambert-St Louis

Wed 10/16

1 stop15h 20m

Lisbon Humberto Delgado

Mon 10/21

2 stops34h 40m

$734

Lambert-St LouisLisbon Humberto Delgado

STL - LIS

STLLIS

Lambert-St Louis

Thu 10/17

2 stops14h 40m

Lisbon Humberto Delgado

Thu 10/24

2 stops16h 50m

$762

Lambert-St LouisLisbon Humberto Delgado

STL - LIS

STLLIS

Lambert-St Louis

Thu 9/12

2 stops16h 19m

Lisbon Humberto Delgado

Mon 9/23

2 stops27h 10m

$949

Flights are sorted by cheapest first

Deals found on 5/31

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 Air Canada, Delta and Lufthansa. 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

Crew

8.6

Comfort

7.9

Food

7.4

Boarding

8.2

Overall

8.0

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

Crew

8.6

Comfort

7.9

Food

7.4

Boarding

8.2

Overall

8.0

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.

KLM
7.9
Good
1,507 reviews
Delta
8.0
Very good
10,410 reviews
Check prices

Crew

8.6

Comfort

7.9

Food

7.4

Boarding

8.2

Overall

8.0

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

Crew

8.6

Comfort

7.9

Food

7.4

Boarding

8.2

Overall

8.0

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

Crew

8.6

Comfort

7.9

Food

7.4

Boarding

8.2

Overall

8.0

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

Crew

8.6

Comfort

7.9

Food

7.4

Boarding

8.2

Overall

8.0

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 $600 on Cheapflights?

    Yes, there are multiple flights from St. Louis to Portugal for under $600. The cheapest flight booked recently is on Air Canada for just $568, but on average you can expect to pay $603.

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

    For one-way options, check prices for Lufthansa. According to our data, you can fly for as low as $404. Users have also found prices from $482 and $546 on United Airlines and Air France, 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.
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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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