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

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

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 15h 42m on average. Another popular route from Portugal to St. Louis is flying from Porto to St. Louis, which will take roughly 28h 49m. Keep in mind that layovers or delays could extend your travel time.

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.

$529 Cheap Flights from Portugal to St. Louis in 2025

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Find the cheapest flights from Portugal to St. Louis

Round-trip

One-way

Recent round-trip flight deals from Portugal to St. Louis

10:55 am - 9:50 pmLIS-STL

16h 55m2 stops

6:29 pm - 6:55 pmSTL-LIS

18h 26m2 stops

$795American Airlines

Find Deal

Thu, Dec 4 - Mon, Dec 8

10:55 am - 7:04 pmLIS-STL

14h 09m2 stops

6:29 pm - 2:55 pmSTL-LIS

14h 26m2 stops

$797American Airlines

Find Deal

Thu, Dec 4 - Mon, Dec 8

8:45 pm - 11:44 pmLIS-STL

32h 59m2 stops

10:36 am - 9:05 amSTL-LIS

16h 29m1 stop

$825Iberia

Find Deal

Sun, Oct 5 - Thu, Oct 16

5:05 am - 1:30 pmLIS-STL

14h 25m1 stop

9:15 am - 11:05 amSTL-LIS

19h 50m1 stop

$832United Airlines

Find Deal

Sun, Oct 5 - Thu, Oct 16

11:55 am - 7:13 pmLIS-STL

13h 18m1 stop

12:55 pm - 10:15 amSTL-LIS

15h 20m1 stop

$854Lufthansa

Find Deal

Thu, Dec 4 - Mon, Dec 8

11:55 am - 7:13 pmLIS-STL

13h 18m1 stop

11:50 am - 8:10 amSTL-LIS

14h 20m1 stop

$857Lufthansa

Find Deal

Thu, Dec 4 - Mon, Dec 8

10:35 am - 9:40 amLIS-STL

29h 05m3 stops

9:15 am - 9:20 amSTL-LIS

18h 05m2 stops

$994

Find Deal

Wed, Sep 17 - Wed, Sep 24

10:35 am - 9:40 amLIS-STL

29h 05m3 stops

9:15 am - 9:50 pmSTL-LIS

30h 35m3 stops

$1,081

Find Deal

Wed, Sep 17 - Wed, Sep 24

12:20 pm - 12:46 pmLIS-STL

30h 26m2 stops

3:20 pm - 9:20 amSTL-LIS

36h 00m2 stops

$1,158United Airlines

Find Deal

Sat, Aug 16 - Sun, Aug 24

4:35 pm - 10:17 pmOPO-STL

35h 42m2 stops

10:08 am - 3:55 pmSTL-OPO

23h 47m2 stops

$1,503Iberia

Find Deal

Mon, Aug 18 - Fri, Aug 22

American Airlines flights from Portugal to St. Louis

Our best American Airlines deals on Portugal to St. Louis flight tickets

American Airlines

Dec 4

LIS10:55 amLisbon Humberto Delgado

16h 55m

2 stops

STL9:50 pmLambert-St Louis

Dec 8

STL6:29 pmLambert-St Louis

18h 26m

2 stops

LIS6:55 pmLisbon Humberto Delgado

$795

Find similar

American Airlines

Dec 4

LIS10:55 amLisbon Humberto Delgado

14h 09m

2 stops

STL7:04 pmLambert-St Louis

Dec 8

STL6:29 pmLambert-St Louis

14h 26m

2 stops

LIS2:55 pmLisbon Humberto Delgado

$797

Find similar

American Airlines

Dec 4

LIS10:55 amLisbon Humberto Delgado

16h 55m

2 stops

STL9:50 pmLambert-St Louis

Dec 8

STL2:44 pmLambert-St Louis

12h 21m

1 stop

LIS9:05 amLisbon Humberto Delgado

$808

Find similar

Lufthansa flights from Portugal to St. Louis

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

Lufthansa

Dec 4

LIS11:55 amLisbon Humberto Delgado

13h 18m

1 stop

STL7:13 pmLambert-St Louis

Dec 8

STL12:55 pmLambert-St Louis

15h 20m

1 stop

LIS10:15 amLisbon Humberto Delgado

$854

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

$857

Find similar

Lufthansa

Aug 15

LIS12:20 pmLisbon Humberto Delgado

12h 40m

1 stop

STL7:00 pmLambert-St Louis

Aug 23

STL11:27 amLambert-St Louis

14h 53m

1 stop

LIS8:20 amLisbon Humberto Delgado

$1,263

Find similar

Fly from

Fly to

Route

Depart

Return

Price

LisbonSt. Louis

LIS - STL

LISSTL

Lisbon Humberto Delgado

Thu 12/4

10:55 am-9:50 pm

2 stops16h 55m

Lambert-St Louis

Mon 12/8

6:29 pm-6:55 pm

2 stops18h 26m

$795

LisbonSt. Louis

LIS - STL

LISSTL

Lisbon Humberto Delgado

Thu 12/4

10:55 am-7:04 pm

2 stops14h 09m

Lambert-St Louis

Mon 12/8

6:29 pm-2:55 pm

2 stops14h 26m

$797

LisbonSt. Louis

LIS - STL

LISSTL

Lisbon Humberto Delgado

Sun 10/5

8:45 pm-11:44 pm

2 stops32h 59m

Lambert-St Louis

Thu 10/16

10:36 am-9:05 am

1 stop16h 29m

$825

LisbonSt. Louis

LIS - STL

LISSTL

Lisbon Humberto Delgado

Sun 10/5

5:05 am-1:30 pm

1 stop14h 25m

Lambert-St Louis

Thu 10/16

9:15 am-11:05 am

1 stop19h 50m

$832

LisbonSt. Louis

LIS - STL

LISSTL

Lisbon Humberto Delgado

Thu 12/4

11:55 am-7:13 pm

1 stop13h 18m

Lambert-St Louis

Mon 12/8

12:55 pm-10:15 am

1 stop15h 20m

$854

LisbonSt. Louis

LIS - STL

LISSTL

Lisbon Humberto Delgado

Thu 12/4

11:55 am-7:13 pm

1 stop13h 18m

Lambert-St Louis

Mon 12/8

11:50 am-8:10 am

1 stop14h 20m

$857

LisbonSt. Louis

LIS - STL

LISSTL

Lisbon Humberto Delgado

Wed 9/17

10:35 am-9:40 am

3 stops29h 05m

Lambert-St Louis

Wed 9/24

9:15 am-9:20 am

2 stops18h 05m

$994

LisbonSt. Louis

LIS - STL

LISSTL

Lisbon Humberto Delgado

Wed 9/17

10:35 am-9:40 am

3 stops29h 05m

Lambert-St Louis

Wed 9/24

9:15 am-9:50 pm

3 stops30h 35m

$1,081

LisbonSt. Louis

LIS - STL

LISSTL

Lisbon Humberto Delgado

Sat 8/16

12:20 pm-12:46 pm

2 stops30h 26m

Lambert-St Louis

Sun 8/24

3:20 pm-9:20 am

2 stops36h 00m

$1,158

PortoSt. Louis

OPO - STL

OPOSTL

Porto

Mon 8/18

4:35 pm-10:17 pm

2 stops35h 42m

Lambert-St Louis

Fri 8/22

10:08 am-3:55 pm

2 stops23h 47m

$1,503

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 36% 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

Best Price Found	$529
Fastest flight time	12h 40m
Direct flights	None
Airports in St. Louis	1 airport

The best one-way flight to St. Louis from Portugal in the past 72 hours is $529. The best round-trip flight deal from Portugal to St. Louis found on momondo in the last 72 hours is $795.

The fastest flight from Portugal to St. Louis takes 12h 40m

There are no direct flights from Portugal to St. Louis. Popular non-direct routes for this connection are Porto Airport - Lambert-St Louis Airport and Lisbon Humberto Delgado Airport - Lambert-St Louis Airport.

There is 1 airport near St. Louis: Lambert-St Louis (STL)

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

Fairview Heights

Hermann

Maryland Heights

Florissant

Fenton

O'Fallon

Collinsville

Alton

Wentzville

St. Peters

Farmington

Festus

Glencoe

Eureka

Edwardsville

Clayton

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.