Cheap flights from St. Louis (STL) to Portugal from $529

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 7/20. 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
May 21 — May 281

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 60% 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 $729 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 $729 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.

When is the cheapest time to fly from St. Louis to Portugal (STL - 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 2,637,452 searches. Data last updated May 16, 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 8/210:10 amSTL - LIS
2 stops16h 00mAir Canada
Fri 8/911:25 amLIS - STL
2 stops33h 56mAir Canada
Deal found 5/15$965
Wed 9/1112:00 pmSTL - OPO
2 stops17h 25mAir Canada
Sat 9/216:15 amOPO - STL
2 stops19h 45mAir Canada
Deal found 5/14$985
Sun 9/84:05 pmSTL - OPO
2 stops20h 10mAir Canada
Sat 9/216:15 amOPO - STL
2 stops19h 45mAir Canada
Deal found 5/14$991
Fri 8/912:00 pmSTL - LIS
1 stop14h 10mAir Canada
Sat 8/179:45 amLIS - STL
2 stops35h 36mAir Canada
Deal found 5/15$993
Fri 8/94:05 pmSTL - LIS
1 stop13h 05mAir Canada
Sat 8/179:45 amLIS - STL
2 stops35h 36mAir Canada
Deal found 5/16$999
Wed 8/710:10 amSTL - LIS
2 stops17h 10mAir Canada
Tue 8/1311:25 amLIS - STL
1 stop15h 40mAir Canada
Deal found 5/15$1,001
Wed 7/310:10 amSTL - LIS
2 stops17h 10mAir Canada
Wed 7/1011:25 amLIS - STL
1 stop15h 40mAir Canada
Deal found 5/15$1,010
Tue 8/2710:10 amSTL - OPO
2 stops19h 20mAir Canada
Sat 9/78:40 amOPO - STL
2 stops17h 20mAir Canada
Deal found 5/16$1,012
Wed 5/299:50 amSTL - LIS
2 stops17h 30mAir Canada
Wed 6/511:25 amLIS - STL
2 stops14h 36mAir Canada
Deal found 5/15$1,016

Cheap British Airways flights from St. Louis to Portugal

Explore cheap flight options specifically provided by British Airways 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 2,637,452 searches. Data last updated May 16, 2024.
To aid your search, here are some of the cheapest British Airways flights we've found from St. Louis to Portugal. Check back soon if you're not seeing flights that suit your needs.
Tue 6/186:08 pmSTL - LIS
2 stops22h 52mBritish Airways
Wed 6/2611:05 amLIS - STL
1 stop15h 51mBritish Airways
Deal found 5/16$1,045
Sun 6/2312:56 pmSTL - LIS
1 stop14h 09mBritish Airways
Wed 7/36:45 pmLIS - STL
2 stops29h 15mBritish Airways
Deal found 5/16$1,065
Sat 6/156:27 pmSTL - LIS
2 stops22h 48mBritish Airways
Sat 6/227:00 pmLIS - STL
2 stops33h 02mBritish Airways
Deal found 5/16$1,163
Sat 6/156:27 pmSTL - LIS
2 stops22h 48mBritish Airways
Sat 6/227:00 pmLIS - STL
2 stops25h 26mBritish Airways
Deal found 5/15$1,164
Tue 5/2111:17 amSTL - LIS
1 stop15h 48mBritish Airways
Thu 5/3011:05 amLIS - STL
1 stop15h 50mBritish Airways
Deal found 5/15$1,856

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

Find cheap flight options from St. Louis to Portugal specifically for the months of May and June 2024. Explore affordable fares based on user searches. Over the last 7 days, Cheapflights users made 2,637,452 searches. Prices were last updated on May 16, 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 5/2912:50 pmSTL - LIS
1 stop15h 40mUnited Airlines
Wed 6/511:25 amLIS - STL
2 stops34h 33mUnited Airlines
Deal found 5/15$997
Wed 5/2912:50 pmSTL - LIS
1 stop15h 40mMultiple Airlines
Wed 6/511:25 amLIS - STL
1 stop15h 40mMultiple Airlines
Deal found 5/15$1,009
Wed 5/299:50 amSTL - LIS
2 stops17h 30mAir Canada
Wed 6/511:25 amLIS - STL
2 stops14h 36mAir Canada
Deal found 5/15$1,016
Sun 6/236:00 amSTL - LIS
2 stops20h 00mDelta
Wed 7/35:00 amLIS - STL
2 stops21h 37mDelta
Deal found 5/16$1,037
Tue 6/186:08 pmSTL - LIS
2 stops22h 52mBritish Airways
Wed 6/2611:05 amLIS - STL
1 stop15h 51mBritish Airways
Deal found 5/16$1,045
Wed 6/1210:05 amSTL - LIS
2 stops18h 50mDelta
Wed 6/1910:00 amLIS - STL
2 stops19h 43mDelta
Deal found 5/15$1,053
Mon 6/33:05 pmSTL - OPO
2 stops18h 35mDelta
Wed 8/76:30 amOPO - STL
2 stops20h 02mDelta
Deal found 5/15$1,056
Tue 6/1811:25 amSTL - LIS
2 stops17h 30mDelta
Wed 6/265:40 amLIS - STL
2 stops20h 57mDelta
Deal found 5/16$1,059
Wed 6/1211:00 amSTL - OPO
2 stops18h 20mMultiple Airlines
Wed 6/196:15 amOPO - STL
2 stops39h 06mMultiple Airlines
Deal found 5/15$1,063

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 2,637,452 searches. Data last updated May 16, 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 12/24:10 pmSTL - LIS
2 stops35h 10mMultiple Airlines
Thu 12/125:00 amLIS - STL
2 stops34h 53mMultiple Airlines
Deal found 5/15$555
Sun 11/247:00 amSTL - LIS
1 stop19h 10mMultiple Airlines
Wed 12/45:00 amLIS - STL
1 stop14h 55mMultiple Airlines
Deal found 5/16$559
Sun 11/247:03 pmSTL - LIS
2 stops16h 42mAmerican Airlines
Wed 12/46:35 amLIS - STL
2 stops22h 47mAmerican Airlines
Deal found 5/16$561
Mon 12/22:41 pmSTL - LIS
1 stop12h 24mAmerican Airlines
Thu 12/128:45 amLIS - STL
1 stop17h 21mAmerican Airlines
Deal found 5/15$566
Wed 10/3011:51 amSTL - LIS
2 stops16h 09mKLM
Fri 11/1511:15 amLIS - STL
2 stops15h 24mKLM
Deal found 5/14$570
Wed 10/309:19 amSTL - LIS
1 stop16h 26mAmerican Airlines
Fri 11/156:35 amLIS - STL
2 stops20h 56mAmerican Airlines
Deal found 5/14$621
Wed 10/309:19 amSTL - LIS
1 stop16h 26mAmerican Airlines
Fri 11/1511:15 amLIS - STL
1 stop30h 35mAmerican Airlines
Deal found 5/14$627
Fri 11/86:45 amSTL - LIS
1 stop19h 10mAmerican Airlines
Sun 11/179:00 amLIS - STL
1 stop32h 50mAmerican Airlines
Deal found 5/15$672
Fri 11/85:43 amSTL - LIS
2 stops20h 12mAmerican Airlines
Sun 11/179:00 amLIS - STL
1 stop32h 50mAmerican Airlines
Deal found 5/15$675

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 2,637,452 searches. Data last updated May 16, 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 5/239:50 amSTL - LIS
3 stops32h 05mMultiple Airlines
Sat 5/256:40 amLIS - STL
3 stops40h 45mMultiple Airlines
Deal found 5/15$1,086
Tue 5/215:37 pmSTL - LIS
2 stops18h 23mDelta
Tue 5/285:25 amLIS - STL
2 stops22h 27mDelta
Deal found 5/14$1,146
Sat 5/253:05 pmSTL - LIS
2 stops21h 35mDelta
Sat 6/15:40 amLIS - STL
2 stops21h 54mDelta
Deal found 5/15$1,244
Tue 5/214:05 pmSTL - LIS
2 stops16h 35mMultiple Airlines
Tue 5/284:20 pmLIS - STL
1 stop27h 10mMultiple Airlines
Deal found 5/14$1,247
Wed 5/2210:20 amSTL - OPO
2 stops18h 20mDelta
Fri 8/309:15 amOPO - STL
2 stops18h 14mDelta
Deal found 5/15$1,258
Wed 5/2211:00 amSTL - LIS
1 stop16h 20mAir Canada
Wed 5/2911:25 amLIS - STL
1 stop15h 40mAir Canada
Deal found 5/15$1,335
Wed 5/2211:00 amSTL - OPO
2 stops25h 30mMultiple Airlines
Fri 8/3011:00 amOPO - STL
3 stops34h 21mMultiple Airlines
Deal found 5/15$1,395
Thu 5/239:50 amSTL - LIS
2 stops17h 30mAir Canada
Thu 5/3011:25 amLIS - STL
1 stop15h 40mAir Canada
Deal found 5/15$1,445
Thu 5/239:50 amSTL - LIS
2 stops17h 30mAir Canada
Wed 5/2911:25 amLIS - STL
2 stops33h 56mAir Canada
Deal found 5/15$1,451

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 2,637,452 searches. Data last updated May 16, 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 7/2010:19 amSTL - OPO
2 stops14h 36mUnited Airlines
Deal found 5/16$529
Sat 6/298:02 pmSTL - LIS
3 stops40h 18mMultiple Airlines
Deal found 5/15$580
Sat 5/258:04 pmSTL - LIS
3 stops59h 31mMultiple Airlines
Deal found 5/15$733
Fri 5/246:05 pmSTL - LIS
3 stops56h 50mMultiple Airlines
Deal found 5/15$742
Sat 6/294:36 pmSTL - LIS
2 stops35h 54mUnited Airlines
Deal found 5/15$881
Sat 5/255:56 pmSTL - LIS
2 stops30h 34mMultiple Airlines
Deal found 5/15$884
Wed 7/243:25 pmSTL - OPO
1 stop18h 10mLufthansa
Deal found 5/16$898
Fri 5/247:44 pmSTL - LIS
2 stops45h 11mMultiple Airlines
Deal found 5/15$929
Sat 6/296:08 amSTL - LIS
1 stop20h 57mAmerican Airlines
Deal found 5/15$975

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 2,637,452 searches. Data last updated May 16, 2024.

Fly from

Any airport

Fly to

Any airport

Budget

$901 - $1,661

Route

Depart

Return

Price

Lambert-St LouisPorto

STL - OPO

STLOPO

Lambert-St Louis

Tue 9/10

2 stops30h 51m

Porto

Sun 9/15

3 stops41h 19m

$901

Lambert-St LouisPorto

STL - OPO

STLOPO

Lambert-St Louis

Tue 10/1

2 stops19h 25m

Porto

Tue 10/15

2 stops19h 46m

$940

Lambert-St LouisPorto

STL - OPO

STLOPO

Lambert-St Louis

Tue 10/1

2 stops18h 55m

Porto

Tue 10/15

1 stop31h 15m

$959

Lambert-St LouisLisbon Humberto Delgado

STL - LIS

STLLIS

Lambert-St Louis

Fri 8/2

2 stops16h 00m

Lisbon Humberto Delgado

Fri 8/9

2 stops33h 56m

$965

Lambert-St LouisPorto

STL - OPO

STLOPO

Lambert-St Louis

Tue 9/10

2 stops23h 32m

Porto

Fri 9/20

1 stop13h 30m

$1,004

Lambert-St LouisPorto

STL - OPO

STLOPO

Lambert-St Louis

Mon 9/9

2 stops33h 15m

Porto

Sat 9/21

2 stops17h 43m

$1,025

Lambert-St LouisLisbon Humberto Delgado

STL - LIS

STLLIS

Lambert-St Louis

Tue 6/18

2 stops22h 52m

Lisbon Humberto Delgado

Wed 6/26

1 stop15h 51m

$1,045

Lambert-St LouisLisbon Humberto Delgado

STL - LIS

STLLIS

Lambert-St Louis

Wed 6/12

2 stops28h 19m

Lisbon Humberto Delgado

Wed 6/19

1 stop15h 51m

$1,217

Lambert-St LouisLisbon Humberto Delgado

STL - LIS

STLLIS

Lambert-St Louis

Wed 5/22

2 stops16h 22m

Lisbon Humberto Delgado

Thu 5/30

2 stops17h 34m

$1,661

Flights are sorted by cheapest first

Deals found on 5/15

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

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 May 16, 2024.
To help decide which airline to fly from St. Louis to Portugal, see what other customers have to say about Air Canada, British Airways and American Airlines. In addition to providing an overall rating, users have also rated airlines in terms of entertainment options, comfort, food, crew/service, and boarding process.
8.0
Very good
10,673 reviews

Entertainment

8.0

Boarding

8.2

Food

7.4

Crew

8.6

Comfort

7.9

Overall

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.

8.0
Very good
10,673 reviews
8.0
Very good
10,673 reviews

Entertainment

8.0

Boarding

8.2

Food

7.4

Crew

8.6

Comfort

7.9

Overall

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.

7.6
Good
1,764 reviews
8.0
Very good
10,673 reviews

Entertainment

8.0

Boarding

8.2

Food

7.4

Crew

8.6

Comfort

7.9

Overall

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.

7.4
Good
10,924 reviews
8.0
Very good
10,673 reviews

Entertainment

8.0

Boarding

8.2

Food

7.4

Crew

8.6

Comfort

7.9

Overall

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.

7.3
Good
14,514 reviews
8.0
Very good
10,673 reviews

Entertainment

8.0

Boarding

8.2

Food

7.4

Crew

8.6

Comfort

7.9

Overall

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.

7.1
Good
2,748 reviews
8.0
Very good
10,673 reviews

Entertainment

8.0

Boarding

8.2

Food

7.4

Crew

8.6

Comfort

7.9

Overall

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 $1,000 on Cheapflights?

    Yes, there are multiple flights from St. Louis to Portugal for under $1,000. The cheapest flight booked recently is on Multiple Airlines for just $901, but on average you can expect to pay $972.

  • Are there last-minute flights available from St. Louis to Portugal for under $1,100?

    There are currently 20+ open flights from St. Louis to Portugal within the next 7 days for less than $1,100.

  • 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 $529. Users have also found prices from $898 and $975 on Lufthansa and American Airlines, respectively.

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

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

  • 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 5/16.

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.

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 2,637,452 searches. Data last updated May 16, 2024.
AirlineCheapestAverageFlexibilityOn-time
LufthansaCheapest$537Average$1,040FlexibilityNo cancel feeOn-time76%
Search Lufthansa flights
British AirwaysCheapest$554Average$913FlexibilityNo cancel feeOn-time70%
Search British Airways flights
United AirlinesCheapest$557Average$975FlexibilityNo cancel feeOn-time69%
Search United Airlines flights
DeltaCheapest$595Average$948FlexibilityNo cancel feeOn-timeN/A
Search Delta flights
IberiaCheapest$624Average$983FlexibilityNo cancel feeOn-time77%
Search Iberia flights
American AirlinesCheapest$624Average$1,073FlexibilityNo cancel feeOn-time71%
Search American Airlines flights
KLMCheapest$666Average$876FlexibilityNo cancel feeOn-time75%
Search KLM flights
Air CanadaCheapest$843Average$1,282FlexibilityNo cancel feeOn-time67%
Search Air Canada flights

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.

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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