How long is the flight from Portugal to St. Louis?

Departing from Portugal to St. Louis will take you 14h 55m. Airlines will cover a distance of 4212 mi. When browsing for deals, the options you’ll see will be for both nonstop flights and flights with stops.

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.

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).

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

Regardless of the time of day you decide to fly, the ticket price will remain around the same. Book flights from Portugal to St. Louis as you normally would.

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.

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.

$839+ Flights from Portugal to St. Louis

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Cheap flight deals from Portugal to St. Louis

Best flights from Portugal to St. Louis
Discover carefully curated flight deals from Portugal to St. Louis that have cost, travel time, and layovers in mind to ensure you get the best travel experience. Data last updated December 18, 2025.

Sun 1/185:00 amLIS - STL

1 stop14h 55mLufthansa

Sat 1/2411:22 amSTL - LIS

1 stop14h 48mLufthansa

Deal found 12/16

$839

Fri 4/35:05 amLIS - STL

1 stop14h 20mMultiple Airlines

Sat 4/114:05 pmSTL - LIS

2 stops15h 35mMultiple Airlines

Deal found 12/17

$860

Thu 1/226:00 amOPO - STL

2 stops21h 13mUnited Airlines

Mon 1/2611:20 amSTL - OPO

2 stops18h 20mUnited Airlines

Deal found 12/15

$860

Thu 1/155:00 amLIS - STL

2 stops40h 29mAir Canada

Mon 1/196:40 pmSTL - LIS

2 stops32h 40mAir Canada

Deal found 12/16

$868

Thu 1/1510:55 amLIS - STL

1 stop17h 49mAmerican Airlines

Mon 1/192:54 pmSTL - LIS

2 stops15h 11mAmerican Airlines

Deal found 12/15

$876

Tue 1/135:00 amLIS - STL

2 stops24h 25mDelta

Tue 1/2010:19 amSTL - LIS

2 stops19h 01mDelta

Deal found 12/16

$879

Tue 1/1311:05 amLIS - STL

1 stop17h 39mIberia

Tue 1/209:33 amSTL - LIS

1 stop17h 32mIberia

Deal found 12/16

$889

Tue 1/1310:15 amLIS - STL

1 stop19h 44mLufthansa

Tue 1/2011:22 amSTL - LIS

1 stop14h 48mLufthansa

Deal found 12/16

$872

Thu 1/1510:15 amLIS - STL

1 stop13h 03mUnited Airlines

Mon 1/194:05 pmSTL - LIS

1 stop11h 15mUnited Airlines

Deal found 12/15

$896

Last-minute flights from Portugal to St. Louis
Discover last-minute flight deals from Portugal to St. Louis. Data last updated December 18, 2025 and is based on user searches.

Tue 1/1310:15 amLIS - STL

1 stop19h 44mLufthansa

Tue 1/2011:22 amSTL - LIS

1 stop14h 48mLufthansa

Deal found 12/16

$872

Tue 1/135:00 amLIS - STL

2 stops24h 25mDelta

Tue 1/2010:19 amSTL - LIS

2 stops19h 01mDelta

Deal found 12/16

$879

Tue 1/1311:05 amLIS - STL

1 stop17h 39mIberia

Tue 1/209:33 amSTL - LIS

1 stop17h 32mIberia

Deal found 12/16

$889

Tue 1/1311:20 amLIS - STL

2 stops34h 09mAir Canada

Tue 1/209:57 amSTL - LIS

3 stops17h 23mAir Canada

Deal found 12/16

$996

Thu 1/155:00 amLIS - STL

2 stops40h 29mAir Canada

Mon 1/196:40 pmSTL - LIS

2 stops32h 40mAir Canada

Deal found 12/16

$868

Thu 1/1510:55 amLIS - STL

1 stop17h 49mAmerican Airlines

Mon 1/192:54 pmSTL - LIS

2 stops15h 11mAmerican Airlines

Deal found 12/15

$876

Thu 1/1510:15 amLIS - STL

1 stop13h 03mUnited Airlines

Mon 1/194:05 pmSTL - LIS

1 stop11h 15mUnited Airlines

Deal found 12/15

$896

Sun 1/185:00 amLIS - STL

1 stop14h 55mLufthansa

Sat 1/2411:22 amSTL - LIS

1 stop14h 48mLufthansa

Deal found 12/16

$839

Thu 1/226:00 amOPO - STL

2 stops21h 13mUnited Airlines

Mon 1/2611:20 amSTL - OPO

2 stops18h 20mUnited Airlines

Deal found 12/15

$860

Find flight deals from Portugal to St. Louis

Most accurate provider	eDreams 3 stars
Most trusted provider	eDreams 3 stars
Round-trip from	$839 (Kiwi.com)
Popular in	September
Cheapest in	December
Average price	$796

Provider with most accurate pricing for Lisbon Humberto Delgado-Lambert-St Louis flight deals.

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Provider most trusted by Cheapflights users for Lisbon Humberto Delgado-Lambert-St Louis flights.

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From Portugal to Lambert-St Louis

Search Deals

Highest demand for flights based on searches. 10% potential increase in price ($108 potential increase over avg. RT price).

Search Deals

Cheapest flight prices on average. 2% potential price decrease ($20 potential savings vs. average RT price).

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Average for round-trip flights in December 2025

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Cheapflights Fare Finder

Use the filters below to find and compare flights from Portugal to St. Louis that are best for you.

Fly from

Fly to

Route

Depart

Return

Price

LisbonSt. Louis

LIS - STL

LISSTL

Lisbon Humberto Delgado

Sun 1/18

5:00 am-1:55 pm

1 stop14h 55m

Lambert-St Louis

Sat 1/24

11:22 am-8:10 am

1 stop14h 48m

$839

LisbonSt. Louis

LIS - STL

LISSTL

Lisbon Humberto Delgado

Fri 4/3

5:05 am-1:25 pm

1 stop14h 20m

Lambert-St Louis

Sat 4/11

4:05 pm-1:40 pm

2 stops15h 35m

$860

PortoSt. Louis

OPO - STL

OPOSTL

Porto

Thu 1/22

6:00 am-9:13 pm

2 stops21h 13m

Lambert-St Louis

Mon 1/26

11:20 am-11:40 am

2 stops18h 20m

$860

LisbonSt. Louis

LIS - STL

LISSTL

Lisbon Humberto Delgado

Thu 1/15

5:00 am-3:29 pm

2 stops40h 29m

Lambert-St Louis

Mon 1/19

6:40 pm-9:20 am

2 stops32h 40m

$868

LisbonSt. Louis

LIS - STL

LISSTL

Lisbon Humberto Delgado

Tue 1/13

10:15 am-11:59 pm

1 stop19h 44m

Lambert-St Louis

Tue 1/20

11:22 am-8:10 am

1 stop14h 48m

$872

LisbonSt. Louis

LIS - STL

LISSTL

Lisbon Humberto Delgado

Thu 1/15

10:55 am-10:44 pm

1 stop17h 49m

Lambert-St Louis

Mon 1/19

2:54 pm-12:05 pm

2 stops15h 11m

$876

LisbonSt. Louis

LIS - STL

LISSTL

Lisbon Humberto Delgado

Tue 1/13

5:00 am-11:25 pm

2 stops24h 25m

Lambert-St Louis

Tue 1/20

10:19 am-11:20 am

2 stops19h 01m

$879

LisbonSt. Louis

LIS - STL

LISSTL

Lisbon Humberto Delgado

Tue 1/13

11:05 am-10:44 pm

1 stop17h 39m

Lambert-St Louis

Tue 1/20

9:33 am-9:05 am

1 stop17h 32m

$889

LisbonSt. Louis

LIS - STL

LISSTL

Lisbon Humberto Delgado

Thu 1/15

10:15 am-5:18 pm

1 stop13h 03m

Lambert-St Louis

Mon 1/19

4:05 pm-9:20 am

1 stop11h 15m

$896

Flights are sorted by cheapest round-trip flights first.

Deals found on 12/16

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.

Cheapflights Insights

Everything you need to know about your flight from Portugal to St. Louis

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

Related info for your journey

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.
How long is the flight from Portugal to St. Louis?
Departing from Portugal to St. Louis will take you 14h 55m. Airlines will cover a distance of 4212 mi. When browsing for deals, the options you’ll see will be for both nonstop flights and flights with stops.
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.

See more FAQs

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Collinsville

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$839+ Cheap flights from Portugal to St. Louis (STL)

This is the cheapest round-trip flight price found by a Cheapflights user in the last 72 hours by searching for a flight departing on 1/18. Fares are subject to change and may not be available on all flights or dates of travel.

Find cheap flights from Portugal to St. Louis with Cheapflights

1. Tell us where you want to go

2. Select your favorite providers

3. Compare prices and book

Cheap flight deals from Portugal to St. Louis

Best flights from Portugal to St. LouisDiscover carefully curated flight deals from Portugal to St. Louis that have cost, travel time, and layovers in mind to ensure you get the best travel experience. Data last updated December 18, 2025.

Discover carefully curated flight deals from Portugal to St. Louis that have cost, travel time, and layovers in mind to ensure you get the best travel experience. Data last updated December 18, 2025.

Find flight deals from Portugal to St. Louis

Keep the following information in mind while searching for Portugal to St. Louis flight deals. Data was last updated December 18, 2025.

Most accurate provider

Most trusted provider

Round-trip from

Popular in

Cheapest in

Average price

Cheapflights Fare Finder

Use the filters below to find and compare flights from Portugal to St. Louis that are best for you.

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.

Cheapflights Insights

Everything you need to know about your flight from Portugal to St. Louis

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?

How long is the flight from Portugal to St. Louis?

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

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

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

Traveling to a place near St. Louis?

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Best flights from Portugal to St. Louis
Discover carefully curated flight deals from Portugal to St. Louis that have cost, travel time, and layovers in mind to ensure you get the best travel experience. Data last updated December 18, 2025.