HomeSearch by dateVacation packagesHotelsFlight dealsCar rentalTravel tips & news
St. Louis

$633+ Cheap flights from Portugal to St. Louis (STL)

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 4/30. Fares are subject to change and may not be available on all flights or dates of travel.
LIS — STL
Dec 23 — Dec 301
Mon 12/23
Mon 12/30
1 adult, Economy
We work with more than 300 partners to bring you better travel deals

Find cheap flights from Portugal to St. Louis with Cheapflights

1. Tell us where you want to go
Enter your travel information like dates, passengers, trip type (one-way or round trip), and preferred cabin class then click “Find deals”
2. Select your favorite providers
We find the providers serving your travel needs. Choose up to four travel providers to compare side-by-side for flights, hotels, or car rentals.
3. Compare prices and book
Review each provider’s pricing and select the best option for you! Book through your favorite provider’s website for a seamless experience.

Cheap flight deals from Portugal to St. Louis

Discover tips and strategies to find the most affordable flight options for your journey from Portugal (PT0) to St. Louis (STL). 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 December 18, 2024.

Round-trip from

$762
(Delta)

One-way from

$633
(Cheapflightsfares)
From Portugal to Lambert-St Louis
Search Deals
One-way flight from Portugal to Lambert-St Louis
Search Deals

Find flight deals from Portugal to St. Louis

Cheapest flights from Portugal to St. Louis
Explore the most affordable flight options available from Portugal to St. Louis. Find the lowest fares from popular airlines and budget airlines, with prices last updated on December 18, 2024.

This Air France deal was found by Cheapflights users on 12/18. 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.
Sat 12/285:00 amLIS - STL
2 stops17h 59mMultiple Airlines
Sat 1/115:00 pmSTL - LIS
2 stops16h 10mMultiple Airlines
Deal found 12/18$763
This American Airlines deal was found by Cheapflights users on 12/18. 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.
Sat 12/2810:30 amLIS - STL
1 stop16h 29mAmerican Airlines
Sat 1/116:00 amSTL - LIS
1 stop21h 05mAmerican Airlines
Deal found 12/18$1,216

Find flights from Portugal to St. Louis within your budget

Customize your flight search to find flights from Portugal to St. Louis 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 2,558,603 searches. Data last updated December 18, 2024.

Fly from

Any airport

Fly to

Any airport

Route

Depart

Return

Price

LisbonSt. Louis

LIS - STL

LISSTL

Lisbon Humberto Delgado

Fri 1/24

5:00 am-4:42 pm

2 stops17h 42m

Lambert-St Louis

Tue 1/28

11:50 am-3:10 pm

2 stops21h 20m

$762

LisbonSt. Louis

LIS - STL

LISSTL

Lisbon Humberto Delgado

Sat 12/28

5:00 am-4:59 pm

2 stops17h 59m

Lambert-St Louis

Sat 1/11

5:00 pm-3:10 pm

2 stops16h 10m

$763

LisbonSt. Louis

LIS - STL

LISSTL

Lisbon Humberto Delgado

Fri 1/24

5:00 am-1:55 pm

1 stop14h 55m

Lambert-St Louis

Tue 1/28

11:30 am-9:20 am

2 stops15h 50m

$764

LisbonSt. Louis

LIS - STL

LISSTL

Lisbon Humberto Delgado

Sat 12/28

10:30 am-8:59 pm

1 stop16h 29m

Lambert-St Louis

Sat 1/11

6:00 am-9:05 am

1 stop21h 05m

$1,216

LisbonSt. Louis

LIS - STL

LISSTL

Lisbon Humberto Delgado

Wed 4/30

8:25 am-8:04 pm

2 stops17h 39m

$633

LisbonSt. Louis

LIS - STL

LISSTL

Lisbon Humberto Delgado

Wed 4/30

11:25 am-3:38 pm

3 stops34h 13m

$854

Flights are sorted by cheapest round-trip flights first.

Deals found on 12/17

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

Have a flexible travel schedule? Discover the best time to fly to St. Louis from Portugal 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 Portugal to St. Louis

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

Rainfall in St. Louis by month

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

In terms of precipitation, rainfall in St. Louis ranges from 2.2 - 4.7 inches per month. May is typically the wettest month, when rainfall can reach 4.7 in. February is typically the driest time to visit St. Louis when rainfall is around 2.2 in.

Temperature in St. Louis by month

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

If weather is an important factor for your trip to St. Louis, 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 80.6 F. Travelers looking to avoid the cold should look outside of January, when temperatures are typically at their lowest (around 32.0 F).

Reviews of airlines servicing St. Louis

Get insights into the airlines that provide service to St. Louis. 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 St. Louis. Reviews last updated December 18, 2024.
Delta
8.0
Very good
8,604 reviews

Boarding

8.2

Comfort

7.9

Entertainment

7.9

Crew

8.6

Overall

8.0

Food

7.3

Reviews

1 / 10

Delta has consistently been the best U.S. airline for my travels and this flight was no exception

Delta
8.0
Very good
8,604 reviews
Delta
8.0
Very good
8,604 reviews

Boarding

8.2

Comfort

7.9

Entertainment

7.9

Crew

8.6

Overall

8.0

Food

7.3

Reviews

1 / 10

Delta has consistently been the best U.S. airline for my travels and this flight was no exception

United Airlines
7.4
Good
9,055 reviews
Delta
8.0
Very good
8,604 reviews

Boarding

8.2

Comfort

7.9

Entertainment

7.9

Crew

8.6

Overall

8.0

Food

7.3

Reviews

1 / 10

Delta has consistently been the best U.S. airline for my travels and this flight was no exception

American Airlines
7.2
Good
10,000 reviews
Delta
8.0
Very good
8,604 reviews

Boarding

8.2

Comfort

7.9

Entertainment

7.9

Crew

8.6

Overall

8.0

Food

7.3

Reviews

1 / 10

Delta has consistently been the best U.S. airline for my travels and this flight was no exception

Iberia
7.0
Good
2,656 reviews
Delta
8.0
Very good
8,604 reviews

Boarding

8.2

Comfort

7.9

Entertainment

7.9

Crew

8.6

Overall

8.0

Food

7.3

Reviews

1 / 10

Delta has consistently been the best U.S. airline for my travels and this flight was no exception

Lufthansa
6.8
Okay
7,091 reviews
Delta
8.0
Very good
8,604 reviews

Boarding

8.2

Comfort

7.9

Entertainment

7.9

Crew

8.6

Overall

8.0

Food

7.3

Reviews

1 / 10

Delta has consistently been the best U.S. airline for my travels and this flight was no exception

Related info for your journey

Find useful and relevant information for your journey from Portugal to St. Louis. 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 into for flights to St. Louis from Portugal?

    Lambert-St Louis (STL) is the airport you will fly into if you book a flight from Portugal to St. Louis. It is only a 12.7 mi journey from Lambert-St Louis (STL) to St. Louis’s city center.

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

    To fly one-way, consider booking your trip with Iberia, which is currently one of the cheapest options available, starting at $633. British Airways flights start at $634 while deals on United Airlines start at $854 one-way.

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

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

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

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

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

    Yes. Cheapflights offers flight deals from Portugal to St. Louis 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 Portugal to St. Louis?

    Currently, August is the cheapest month in which you can book a flight from Portugal to St. Louis (average of $311). Flying from Portugal to St. Louis in March is currently the most expensive (average of $356). 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

Browse thousands of different options on Cheapflights for your next trip

Toggle through the tabs below to find thousands of options on Cheapflights for your next trip.

Alternative routes for Portugal to St. Louis

See prices for flight routes from nearby airports that may be better suited for you.
Frankfurt to St. Louis flights
Heathrow to Kansas City flights
Heathrow to St. Louis flights
Frankfurt to Kansas City flights
Gatwick to St. Louis flights
Dublin to Kansas City flights
Gatwick to Kansas City flights
Charles de Gaulle to St. Louis flights
Charles de Gaulle to Kansas City flights
Duesseldorf Intl to St. Louis flights
Dublin to St. Louis flights
Madrid to St. Louis flights
Vienna to St. Louis flights
Barcelona-El Prat to Kansas City flights
Zurich to Kansas City flights
Berlin to St. Louis flights
Amsterdam to Kansas City flights
Hamburg to Kansas City flights
Munich to Kansas City flights
Geneva to St. Louis flights
Istanbul to Kansas City flights
Madrid to Kansas City flights
Manchester to St. Louis flights
Manchester to Kansas City flights
Heathrow to Springfield flights
Bilbao to St. Louis flights
Hamburg to St. Louis flights
Otopeni Intl to Kansas City flights
Amsterdam to St. Louis flights
Duesseldorf Intl to Kansas City flights
Malpensa to Kansas City flights
Arlanda to St. Louis flights
Edinburgh to St. Louis flights
Prague to St. Louis flights
Leonardo da Vinci/Fiumicino to Kansas City flights
Munich to St. Louis flights
Bruxelles-National to Kansas City flights
Stuttgart to Kansas City flights
Arlanda to Kansas City flights
Copenhagen to Kansas City flights
Lisbon to Kansas City flights
100% Free
Cheapflights is completely free to use, so you can start saving the moment you arrive.
Book with Flexibility
Our users can plan ahead with confidence and find flights with no change fees
Travel Smart
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.