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.

$549+ Flights from Portugal to St. Louis

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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 noviembre 3, 2025.

jue. 12/45:00 amLIS - STL

2 stops24h 42mLufthansa

lun. 12/812:55 pmSTL - LIS

1 stop15h 20mLufthansa

Deal found 11/2

$789

vie. 11/215:00 amLIS - STL

1 stop14h 55mLufthansa

mar. 11/251:10 pmSTL - LIS

1 stop15h 05mLufthansa

Deal found 11/2

$795

vie. 11/215:00 amLIS - STL

1 stop14h 55mUnited Airlines

mar. 11/2511:05 amSTL - LIS

2 stops15h 05mUnited Airlines

Deal found 11/2

$818

jue. 12/45:00 amLIS - STL

2 stops22h 40mUnited Airlines

lun. 12/83:19 pmSTL - LIS

2 stops12h 56mUnited Airlines

Deal found 11/2

$824

jue. 12/49:05 amLIS - STL

3 stops34h 50mMultiple Airlines

lun. 12/84:05 pmSTL - LIS

2 stops25h 05mMultiple Airlines

Deal found 11/2

$999

mar. 12/1611:15 amLIS - STL

2 stops16h 42mVirgin Atlantic

mar. 12/236:05 amSTL - LIS

2 stops19h 55mVirgin Atlantic

Deal found 11/1

$1,038

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 noviembre 3, 2025.

jue. 12/45:00 amLIS - STL

2 stops24h 42mLufthansa

lun. 12/812:55 pmSTL - LIS

1 stop15h 20mLufthansa

Deal found 11/2

$789

vie. 11/215:00 amLIS - STL

1 stop14h 55mUnited Airlines

mar. 11/2511:05 amSTL - LIS

2 stops15h 05mUnited Airlines

Deal found 11/2

$818

vie. 11/215:00 amLIS - STL

1 stop14h 55mLufthansa

mar. 11/251:10 pmSTL - LIS

1 stop15h 05mLufthansa

Deal found 11/2

$795

jue. 12/45:00 amLIS - STL

2 stops20h 17mUnited Airlines

lun. 12/812:55 pmSTL - LIS

1 stop15h 20mUnited Airlines

Deal found 11/1

$825

vie. 2/64:15 pmOPO - STL

2 stops29h 48mLufthansa

dom. 2/81:15 pmSTL - OPO

2 stops20h 00mLufthansa

Deal found 11/1

$840

Last-minute flights from Portugal to St. Louis
Discover last-minute flight deals from Portugal to St. Louis. Data last updated noviembre 3, 2025 and is based on user searches.

vie. 11/215:00 amLIS - STL

1 stop14h 55mLufthansa

mar. 11/251:10 pmSTL - LIS

1 stop15h 05mLufthansa

Deal found 11/2

$795

vie. 11/215:00 amLIS - STL

1 stop14h 55mUnited Airlines

mar. 11/2511:05 amSTL - LIS

2 stops15h 05mUnited Airlines

Deal found 11/2

$818

One-way flights from Portugal to St. Louis
Search for one-way flight options from Portugal to St. Louis. Find affordable one-way fares based on user searches. Data last updated noviembre 3, 2025.

dom. 12/218:45 pmLIS - STL

2 stops28h 45mMultiple Airlines

Deal found 11/1

$549

sáb. 12/206:00 amLIS - STL

3 stops57h 45mMultiple Airlines

Deal found 11/2

$600

vie. 11/215:00 amLIS - STL

1 stop14h 55mLufthansa

Deal found 11/1

$746

dom. 1/49:50 pmLIS - STL

3 stops54h 43mMultiple Airlines

Deal found 11/2

$774

Cheap flight deals from Portugal to St. Louis

Most accurate provider	eDreams 3 stars
Most trusted provider	eDreams 3 stars
Round-trip from	$788 (Kiwi.com)
One-way from	$549 (Priceline)
Popular in	September
Cheapest in	December
Average price	$1,005

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

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One-way flight from Portugal to Lambert-St Louis

Search Deals

Highest demand for flights based on searches. 9% potential increase in price ($106 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 November 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

jue. 12/4

5:00 am-11:42 pm

2 stops24h 42m

Lambert-St Louis

lun. 12/8

12:55 pm-10:15 am

1 stop15h 20m

$789

LisbonSt. Louis

LIS - STL

LISSTL

Lisbon Humberto Delgado

vie. 11/21

5:00 am-1:55 pm

1 stop14h 55m

Lambert-St Louis

mar. 11/25

1:10 pm-10:15 am

1 stop15h 05m

$795

LisbonSt. Louis

LIS - STL

LISSTL

Lisbon Humberto Delgado

vie. 11/21

5:00 am-1:55 pm

1 stop14h 55m

Lambert-St Louis

mar. 11/25

11:05 am-8:10 am

2 stops15h 05m

$818

LisbonSt. Louis

LIS - STL

LISSTL

Lisbon Humberto Delgado

jue. 12/4

5:00 am-7:17 pm

2 stops20h 17m

Lambert-St Louis

lun. 12/8

12:55 pm-10:15 am

1 stop15h 20m

$825

PortoSt. Louis

OPO - STL

OPOSTL

Porto

vie. 2/6

4:15 pm-4:03 pm

2 stops29h 48m

Lambert-St Louis

dom. 2/8

1:15 pm-3:15 pm

2 stops20h 00m

$840

LisbonSt. Louis

LIS - STL

LISSTL

Lisbon Humberto Delgado

dom. 12/21

8:45 pm-7:30 pm

2 stops28h 45m

$549

LisbonSt. Louis

LIS - STL

LISSTL

Lisbon Humberto Delgado

sáb. 12/20

6:00 am-9:45 am

3 stops57h 45m

$600

LisbonSt. Louis

LIS - STL

LISSTL

Lisbon Humberto Delgado

vie. 11/21

5:00 am-1:55 pm

1 stop14h 55m

$746

Flights are sorted by cheapest round-trip flights first.

Deals found on 11/1

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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$549+ 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 12/21. 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

Find flight deals from Portugal to St. Louis

Cheapest flights from Portugal to St. LouisExplore 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 noviembre 3, 2025.

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 noviembre 3, 2025.

Cheap 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 noviembre 3, 2025.

Most accurate provider

Most trusted provider

Round-trip from

One-way 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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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 noviembre 3, 2025.