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$487+ Cheap flights from St. Louis (STL) to Portugal

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 1/7. Fares are subject to change and may not be available on all flights or dates of travel.
STL — LIS
Nov 26 — Dec 31
Tue 11/26
Tue 12/3
1 adult, Economy
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Cheap flight deals from St. Louis to Portugal

Discover tips and strategies to find the most affordable flight options for your journey from St. Louis (STL) to Portugal (PT0). Learn about various techniques such as flexible date searches, comparing prices across and setting up price alerts. Use these methods to find the cheapest flights available for your travel needs. Data last updated November 21, 2024.

Find flight deals from St. Louis to Portugal

Cheapest flights from St. Louis to Portugal
Explore the most affordable flight options available from St. Louis to Portugal. Find the lowest fares from popular airlines and budget airlines, with prices last updated on November 21, 2024.

This Expedia deal was found by Cheapflights users on 11/19. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Expedia is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 12/115:40 pmSTL - LIS
2 stops18h 05mBritish Airways
Mon 12/166:45 pmLIS - STL
2 stops33h 08mBritish Airways
Deal found 11/19$729
This United Airlines deal was found by Cheapflights users on 11/19. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 12/118:25 amSTL - LIS
1 stop19h 50mUnited Airlines
Mon 12/1611:00 amLIS - STL
2 stops31h 19mUnited Airlines
Deal found 11/19$752
This Air Canada deal was found by Cheapflights users on 11/20. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Air Canada is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 12/153:50 pmSTL - LIS
1 stop11h 30mAir Canada
Mon 12/2311:00 amLIS - STL
1 stop34h 06mAir Canada
Deal found 11/20$905
This American Airlines deal was found by Cheapflights users on 11/20. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 12/126:00 amSTL - LIS
1 stop21h 05mAmerican Airlines
Thu 12/268:55 amLIS - STL
1 stop18h 04mAmerican Airlines
Deal found 11/20$916
This FlightHub deal was found by Cheapflights users on 11/20. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure FlightHub is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 12/112:51 pmSTL - LIS
2 stops15h 19mAer Lingus
Thu 12/1210:50 amLIS - STL
2 stops17h 23mAer Lingus
Deal found 11/20$961
This Delta deal was found by Cheapflights users on 11/20. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 12/1612:56 pmSTL - LIS
1 stop13h 04mDelta
Mon 12/2311:15 amLIS - STL
2 stops18h 25mDelta
Deal found 11/20$968
This Mytrip deal was found by Cheapflights users on 11/19. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Mytrip is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 12/1112:15 pmSTL - LIS
3 stops29h 15mMultiple Airlines
Mon 12/162:05 pmLIS - STL
3 stops31h 16mMultiple Airlines
Deal found 11/19$983
This Iberia deal was found by Cheapflights users on 11/20. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Iberia is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 12/112:51 pmSTL - LIS
1 stop14h 04mIberia
Fri 12/136:30 amLIS - STL
2 stops21h 23mIberia
Deal found 11/20$1,090
This Air France deal was found by Cheapflights users on 11/20. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Air France is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 12/310:09 amSTL - LIS
2 stops16h 51mAir France
Sat 12/1411:15 amLIS - STL
2 stops16h 28mAir France
Deal found 11/20$1,111
This Finnair deal was found by Cheapflights users on 11/20. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Finnair is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 12/112:49 pmSTL - LIS
2 stops28h 36mFinnair
Sat 12/146:30 amLIS - STL
2 stops22h 40mFinnair
Deal found 11/20$1,191
This Lufthansa deal was found by Cheapflights users on 11/20. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Lufthansa is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 12/311:05 pmSTL - LIS
1 stop15h 10mLufthansa
Mon 1/610:15 amLIS - STL
1 stop15h 56mLufthansa
Deal found 11/20$1,419
This KLM deal was found by Cheapflights users on 11/20. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure KLM is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 12/3012:55 pmSTL - LIS
2 stops15h 40mKLM
Sun 1/510:00 amLIS - STL
2 stops19h 40mKLM
Deal found 11/20$2,245

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 2,612,795 searches. Data last updated November 21, 2024.

Fly from

Any airport

Fly to

Any airport

Route

Depart

Return

Price

St. LouisLisbon

STL - LIS

STLLIS

Lambert-St Louis

Wed 2/26

8:25 am-10:15 am

1 stop19h 50m

Lisbon Humberto Delgado

Fri 3/7

11:00 am-2:31 pm

2 stops33h 31m

$553

St. LouisLisbon

STL - LIS

STLLIS

Lambert-St Louis

Wed 2/26

8:25 am-10:15 am

1 stop19h 50m

Lisbon Humberto Delgado

Fri 3/7

5:00 am-1:55 pm

1 stop14h 55m

$558

St. LouisPorto

STL - OPO

STLOPO

Lambert-St Louis

Sun 1/12

3:45 pm-11:35 am

1 stop13h 50m

Porto

Tue 1/28

6:00 am-5:36 pm

2 stops17h 36m

$612

St. LouisLisbon

STL - LIS

STLLIS

Lambert-St Louis

Tue 2/18

2:10 pm-9:15 am

1 stop13h 05m

Lisbon Humberto Delgado

Tue 2/25

6:30 am-8:43 pm

2 stops20h 13m

$618

St. LouisLisbon

STL - LIS

STLLIS

Lambert-St Louis

Tue 2/18

2:10 pm-9:15 am

1 stop13h 05m

Lisbon Humberto Delgado

Wed 2/26

11:15 am-8:43 pm

1 stop15h 28m

$619

St. LouisLisbon

STL - LIS

STLLIS

Lambert-St Louis

Sun 2/16

12:27 pm-8:55 am

2 stops14h 28m

Lisbon Humberto Delgado

Fri 2/28

6:30 am-6:05 pm

2 stops17h 35m

$622

St. LouisLisbon

STL - LIS

STLLIS

Lambert-St Louis

Wed 2/19

1:35 pm-8:00 am

1 stop12h 25m

Lisbon Humberto Delgado

Sun 3/2

10:00 am-9:06 pm

1 stop17h 06m

$626

St. LouisLisbon

STL - LIS

STLLIS

Lambert-St Louis

Sat 3/1

5:36 pm-9:20 am

2 stops33h 44m

Lisbon Humberto Delgado

Sat 3/15

11:00 am-3:31 pm

2 stops33h 31m

$655

St. LouisLisbon

STL - LIS

STLLIS

Lambert-St Louis

Sat 2/15

12:05 pm-11:25 am

2 stops17h 20m

Lisbon Humberto Delgado

Wed 2/26

5:00 am-1:55 pm

1 stop14h 55m

$684

St. LouisLisbon

STL - LIS

STLLIS

Lambert-St Louis

Thu 4/24

4:00 pm-9:05 am

2 stops35h 05m

Lisbon Humberto Delgado

Sat 5/3

7:20 am-11:38 pm

2 stops22h 18m

$824

Flights are sorted by cheapest round-trip flights first.

Deals found on 11/20

Showing 1-10 of 16 results
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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.

Travel insights for flights from St. Louis to Portugal

Get recent, data-driven insights about flights from St. Louis to Portugal including ideal travel times, pricing trends, and more.

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 $589). Flying from St. Louis to Portugal in June is currently the most expensive (average of $1,182). 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.

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

Find hourly flight availability from St. Louis to Portugal. Discover flight options and departure times throughout the day, allowing you to choose a departure time that suits your schedule. Data last updated November 21, 2024.

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.

Rainfall in Portugal by month

Plan your trip to Portugal by taking into account the average rainfall totals by month.

In terms of precipitation, rainfall in Portugal ranges from 0.2 - 4.8 inches per month. December is typically the wettest month, when rainfall can reach 4.8 in. July is typically the driest time to visit Portugal when rainfall is around 0.2 in.

Temperature in Portugal by month

Plan your trip to Portugal by taking into account the average temperature totals by month.

If weather is an important factor for your trip to Portugal, use this chart to help with planning. For those seeking warmer temperatures, July is the ideal time of year to visit, when temperatures reach an average of 73.4 F. Travelers looking to avoid the cold should look outside of January, when temperatures are typically at their lowest (around 51.8 F).

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 November 21, 2024.
To help decide which airline to fly from St. Louis to Portugal, see what other customers have to say about United Airlines, Iberia and British Airways. 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
8,755 reviews

Boarding

8.2

Comfort

7.9

Entertainment

7.9

Food

7.3

Overall

8.0

Crew

8.5

Reviews

1 / 10

This was a flight operated by Virgin Atlantic in their Upper Class cabin. Overall, an outstanding experience.

Delta
8.0
Very good
8,755 reviews
Delta
8.0
Very good
8,755 reviews

Boarding

8.2

Comfort

7.9

Entertainment

7.9

Food

7.3

Overall

8.0

Crew

8.5

Reviews

1 / 10

This was a flight operated by Virgin Atlantic in their Upper Class cabin. Overall, an outstanding experience.

United Airlines
7.4
Good
9,172 reviews
Delta
8.0
Very good
8,755 reviews

Boarding

8.2

Comfort

7.9

Entertainment

7.9

Food

7.3

Overall

8.0

Crew

8.5

Reviews

1 / 10

This was a flight operated by Virgin Atlantic in their Upper Class cabin. Overall, an outstanding experience.

Scandinavian Airlines
7.3
Good
1,294 reviews
Delta
8.0
Very good
8,755 reviews

Boarding

8.2

Comfort

7.9

Entertainment

7.9

Food

7.3

Overall

8.0

Crew

8.5

Reviews

1 / 10

This was a flight operated by Virgin Atlantic in their Upper Class cabin. Overall, an outstanding experience.

American Airlines
7.2
Good
10,000 reviews
Delta
8.0
Very good
8,755 reviews

Boarding

8.2

Comfort

7.9

Entertainment

7.9

Food

7.3

Overall

8.0

Crew

8.5

Reviews

1 / 10

This was a flight operated by Virgin Atlantic in their Upper Class cabin. Overall, an outstanding experience.

Aer Lingus
7.1
Good
1,089 reviews
Delta
8.0
Very good
8,755 reviews

Boarding

8.2

Comfort

7.9

Entertainment

7.9

Food

7.3

Overall

8.0

Crew

8.5

Reviews

1 / 10

This was a flight operated by Virgin Atlantic in their Upper Class cabin. Overall, an outstanding experience.

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.

  • 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.

  • 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.

  • 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 $589). Flying from St. Louis to Portugal in June is currently the most expensive (average of $1,182). 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 2,612,795 searches. Data last updated November 21, 2024.
AirlineCheapestAverageFlexibilityOn-time
LufthansaCheapest$461Average$905FlexibilityNo cancel feeOn-time76%
British AirwaysCheapest$554Average$853FlexibilityNo cancel feeOn-time70%
United AirlinesCheapest$557Average$1,085FlexibilityNo cancel feeOn-time69%
IberiaCheapest$566Average$797FlexibilityNo cancel feeOn-time77%
DeltaCheapest$610Average$1,160FlexibilityNo cancel feeOn-timeN/A
American AirlinesCheapest$629Average$1,051FlexibilityNo cancel feeOn-time71%
KLMCheapest$655Average$1,285FlexibilityNo cancel feeOn-time75%
Air CanadaCheapest$771Average$1,096FlexibilityNo cancel feeOn-time67%
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