How long does it take to fly to St. Louis?

Flight times from Portugal to St. Louis vary, but if you’re flying out of Lisbon and flying into St. Louis (one of the most popular routes), then the duration is 21h 47m on average. Another popular route from Portugal to St. Louis is flying from Porto to St. Louis, which will take roughly 33h 09m. Keep in mind that layovers or delays could extend your travel time.

What is the cheapest airline that flies from Portugal to Lambert-St Louis?

Aer Lingus, Iberia, and Lufthansa are the most popular carriers operating from Portugal to Lambert-St Louis

When did momondo last update prices for flights from Portugal to Lambert-St Louis Airport?

Prices for flights from Portugal to Lambert-St Louis Airport are updated daily.

How old do you have to be to fly from Portugal to Lambert-St Louis Airport?

Although the minimum age for a child to fly alone is five, airlines that offer an unaccompanied minor (UMNR) service may have their own age limits, which could be impacted by factors such as flight length, timing, and layovers. It is recommended that you verify with the airline you are booking with for travel from Portugal to Lambert-St Louis Airport.

What documentation or ID do you need to fly to Lambert-St Louis Airport?

The necessary travel and health documents for your Lambert-St Louis Airport trip may vary depending on your travel plans and individual circumstances. Generally, you should have various documents, such as a national ID card or driver's license and a passport that is valid for six months beyond your scheduled arrival date. We recommend seeking advice from your airline or a trusted third party, such as IATA.

$385 Cheap Flights from Portugal to St. Louis in 2025/26

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5:00 am - 1:55 pmLIS-STL

14h 55m1 stop

1:10 pm - 10:15 amSTL-LIS

15h 05m1 stop

$827Lufthansa

Find Deal

Fri, Nov 21 - Tue, Nov 25

5:00 am - 8:46 pmLIS-STL

21h 46m2 stops

2:36 pm - 11:20 amSTL-LIS

14h 44m2 stops

$840Delta

Find Deal

Fri, Nov 21 - Tue, Nov 25

5:00 am - 8:46 pmLIS-STL

21h 46m2 stops

4:30 pm - 9:00 amSTL-LIS

10h 30m1 stop

$843Delta

Find Deal

Mon, Nov 24 - Mon, Dec 1

10:55 am - 8:08 amLIS-STL

27h 13m2 stops

3:22 pm - 6:55 pmSTL-LIS

21h 33m2 stops

$846American Airlines

Find Deal

Thu, Dec 4 - Mon, Dec 8

10:55 am - 8:08 amLIS-STL

27h 13m2 stops

3:22 pm - 6:55 pmSTL-LIS

21h 33m2 stops

$848American Airlines

Find Deal

Thu, Dec 4 - Mon, Dec 8

5:30 am - 5:09 pmLIS-STL

17h 39m2 stops

4:30 pm - 9:00 amSTL-LIS

10h 30m1 stop

$849Multiple Airlines

Find Deal

Fri, Nov 14 - Tue, Nov 18

5:00 am - 1:55 pmLIS-STL

14h 55m1 stop

8:30 am - 10:15 amSTL-LIS

19h 45m1 stop

$850United Airlines

Find Deal

Sun, Nov 23 - Thu, Dec 4

5:00 am - 7:39 pmLIS-STL

20h 39m2 stops

11:25 am - 8:10 amSTL-LIS

14h 45m2 stops

$856United Airlines

Find Deal

Sat, Nov 22 - Thu, Dec 4

9:30 am - 8:46 pmLIS-STL

17h 16m2 stops

4:30 pm - 9:00 amSTL-LIS

10h 30m1 stop

$866KLM

Find Deal

Tue, Nov 25 - Mon, Dec 1

9:25 am - 12:15 pmLIS-STL

32h 50m3 stops

4:05 pm - 6:15 pmSTL-LIS

20h 10m3 stops

$994Multiple Airlines

Find Deal

Thu, Dec 4 - Mon, Dec 8

Lufthansa flights from Portugal to St. Louis

Our best Lufthansa deals on Portugal to St. Louis flight tickets

Lufthansa

Nov 21

LIS5:00 amLisbon Humberto Delgado

14h 55m

1 stop

STL1:55 pmLambert-St Louis

Nov 25

STL1:10 pmLambert-St Louis

15h 05m

1 stop

LIS10:15 amLisbon Humberto Delgado

$827

Find similar

Lufthansa

Dec 4

LIS11:55 amLisbon Humberto Delgado

13h 18m

1 stop

STL7:13 pmLambert-St Louis

Dec 8

STL11:50 amLambert-St Louis

14h 20m

1 stop

LIS8:10 amLisbon Humberto Delgado

$859

Find similar

Lufthansa

Nov 25

LIS3:55 pmLisbon Humberto Delgado

28h 00m

1 stop

STL1:55 pmLambert-St Louis

Dec 2

STL12:55 pmLambert-St Louis

15h 20m

1 stop

LIS10:15 amLisbon Humberto Delgado

$869

Find similar

Delta flights from Portugal to St. Louis

Our best Delta deals on Portugal to St. Louis flight tickets

Delta

Nov 21

LIS5:00 amLisbon Humberto Delgado

21h 46m

2 stops

STL8:46 pmLambert-St Louis

Nov 25

STL2:36 pmLambert-St Louis

14h 44m

2 stops

LIS11:20 amLisbon Humberto Delgado

$840

Find similar

Delta

Nov 24

LIS5:00 amLisbon Humberto Delgado

21h 46m

2 stops

STL8:46 pmLambert-St Louis

Dec 1

STL4:30 pmLambert-St Louis

10h 30m

1 stop

LIS9:00 amLisbon Humberto Delgado

$843

Find similar

Delta

Nov 14

LIS5:30 amLisbon Humberto Delgado

21h 16m

2 stops

STL8:46 pmLambert-St Louis

Nov 18

STL4:30 pmLambert-St Louis

16h 40m

2 stops

LIS3:10 pmLisbon Humberto Delgado

$845

Find similar

Fly from

Fly to

Route

Depart

Return

Price

LisbonSt. Louis

LIS - STL

LISSTL

Lisbon Humberto Delgado

Fri 11/21

5:00 am-1:55 pm

1 stop14h 55m

Lambert-St Louis

Tue 11/25

1:10 pm-10:15 am

1 stop15h 05m

$827

LisbonSt. Louis

LIS - STL

LISSTL

Lisbon Humberto Delgado

Fri 11/21

5:00 am-8:46 pm

2 stops21h 46m

Lambert-St Louis

Tue 11/25

2:36 pm-11:20 am

2 stops14h 44m

$840

LisbonSt. Louis

LIS - STL

LISSTL

Lisbon Humberto Delgado

Mon 11/24

5:00 am-8:46 pm

2 stops21h 46m

Lambert-St Louis

Mon 12/1

4:30 pm-9:00 am

1 stop10h 30m

$843

LisbonSt. Louis

LIS - STL

LISSTL

Lisbon Humberto Delgado

Thu 12/4

10:55 am-8:08 am

2 stops27h 13m

Lambert-St Louis

Mon 12/8

3:22 pm-6:55 pm

2 stops21h 33m

$846

LisbonSt. Louis

LIS - STL

LISSTL

Lisbon Humberto Delgado

Thu 12/4

10:55 am-8:08 am

2 stops27h 13m

Lambert-St Louis

Mon 12/8

3:22 pm-6:55 pm

2 stops21h 33m

$848

LisbonSt. Louis

LIS - STL

LISSTL

Lisbon Humberto Delgado

Fri 11/14

5:30 am-5:09 pm

2 stops17h 39m

Lambert-St Louis

Tue 11/18

4:30 pm-9:00 am

1 stop10h 30m

$849

LisbonSt. Louis

LIS - STL

LISSTL

Lisbon Humberto Delgado

Sun 11/23

5:00 am-1:55 pm

1 stop14h 55m

Lambert-St Louis

Thu 12/4

8:30 am-10:15 am

1 stop19h 45m

$850

LisbonSt. Louis

LIS - STL

LISSTL

Lisbon Humberto Delgado

Sat 11/22

5:00 am-7:39 pm

2 stops20h 39m

Lambert-St Louis

Thu 12/4

11:25 am-8:10 am

2 stops14h 45m

$856

LisbonSt. Louis

LIS - STL

LISSTL

Lisbon Humberto Delgado

Tue 11/25

9:30 am-8:46 pm

2 stops17h 16m

Lambert-St Louis

Mon 12/1

4:30 pm-9:00 am

1 stop10h 30m

$866

LisbonSt. Louis

LIS - STL

LISSTL

Lisbon Humberto Delgado

Thu 12/4

9:25 am-12:15 pm

3 stops32h 50m

Lambert-St Louis

Mon 12/8

4:05 pm-6:15 pm

3 stops20h 10m

$994

Flights are sorted by cheapest round-trip flights first.

Showing 1-10 of 20 resultsSorted by cheapest first

How to get the cheapest flight ticket from Portugal to St. Louis

Look no further. We've gone through all the searches for this route on momondo so you have the important information and insights to find the cheapest flight ticket for your trip

Prices

Airlines

Other information

What is the cheapest day to depart on your flight to St. Louis?

The cheapest day to depart on your flight to St. Louis is on a Monday when prices can be found for as low as $898. This is often the case because there is less demand to fly during this day of the week. If your travel schedule is flexible, try to avoid departing on a Friday because tickets tend to average around $1,021. These prices are subject to change though, so be sure to set up a Price Alert for flights to St. Louis.

Can stopping save me money on Portugal to St. Louis flights?

You could potentially save up to 50% on your flight if you consider stops on a Portugal to St. Louis flight.

Cheap Portugal to St. Louis flight deals and tips

Find info about flight duration, direct flights, and airports for your flight from Portugal to St. Louis

Direct flights	None

There are no direct flights from Portugal to St. Louis. There are no popular flight routes from Portugal to St. Louis.

Search flight deals

When did momondo last update prices for flights from Portugal to Lambert-St Louis Airport?
Prices for flights from Portugal to Lambert-St Louis Airport are updated daily.
How old do you have to be to fly from Portugal to Lambert-St Louis Airport?
Although the minimum age for a child to fly alone is five, airlines that offer an unaccompanied minor (UMNR) service may have their own age limits, which could be impacted by factors such as flight length, timing, and layovers. It is recommended that you verify with the airline you are booking with for travel from Portugal to Lambert-St Louis Airport.
What documentation or ID do you need to fly to Lambert-St Louis Airport?
The necessary travel and health documents for your Lambert-St Louis Airport trip may vary depending on your travel plans and individual circumstances. Generally, you should have various documents, such as a national ID card or driver's license and a passport that is valid for six months beyond your scheduled arrival date. We recommend seeking advice from your airline or a trusted third party, such as IATA.

St. Charles

Chesterfield

Hermann

Fairview Heights

Maryland Heights

Florissant

O'Fallon

Wentzville

Fenton

Collinsville

St. Peters

Alton

Farmington

Festus

Glencoe

Edwardsville

Clayton

Eureka

Litchfield

Shrewsbury

Why use momondo?

Why should I use momondo to find a flight deal from Portugal to St. Louis?

momondo collates all your flight options in one place and lets you filter them to find the perfect flight from Portugal to St. Louis. momondo saves you time and could save you money on your trip.

Can I find flights from Portugal to St. Louis with flexible booking policies on momondo?

Yes. momondo allows you to filter the results for Portugal to St. Louis flights to just show those with flexible booking policies.

How can momondo help me find flights from Portugal to St. Louis?

Once you have performed a search in the form on the page, momondo provides useful filters and insights. We can show you the cheapest days and times to fly as well as help filter your options to help you make an informed choice when booking flights to St. Louis from Portugal.

I’m not ready to book a flight from Portugal to St. Louis right now. Can momondo alert me if prices change?

Yes momondo offers price alerts on flights to St. Louis from Portugal. After performing a search on this page you should be able to see the price alert set up feature. Simply provide a valid email address and momondo will instantly alert you when prices change.