Latest deals
Insights
When to book
FAQs
Reviews
Price Alerts

Cheap flights from St. Louis to Lisbon from $443

This is the cheapest one-way flight price found by a momondo user in the last 72 hours by searching for a flight from St. Louis to Lisbon departing on 6/10. Fares may change, and may not be available for all flights or travel dates. Click the price to refresh the search for this deal.
1 adult
0 bags

Discover deals from 900+ travel sites with momondo.

Save money when you book flights with momondo

Big names and deals

Big names and deals

Search 100s of travel sites to compare prices.

Filter for what you want

Filter for what you want

Free Wi-Fi? Stopover? Instantly customize your results.

Trusted and free

Trusted and free

We’re completely free to use - no hidden charges or fees.

Price Alerts

Price Alerts

Not ready to book? to track prices.
Search flight deals

Find the cheapest flights from St. Louis to Lisbon

Cheap round-trip flights

Enter your travel dates to find the best prices.
Finnair Logo
12:43 pm - 11:25 pm
STL
-
LIS
28h 42m
2 stops
Finnair Logo
6:35 am - 11:25 pm
LIS
-
STL
22h 50m
2 stops
$810Finnair
Thu, Oct 15 - Thu, Oct 22
United Airlines Logo
6:49 pm - 9:20 am
STL
-
LIS
32h 31m
2 stops
United Airlines Logo
5:00 am - 1:55 pm
LIS
-
STL
14h 55m
1 stop
$855United Airlines
Sat, Oct 10 - Fri, Nov 13
Air Canada Logo
6:49 pm - 9:20 am
STL
-
LIS
32h 31m
2 stops
Air Canada Logo
11:20 am - 2:18 pm
LIS
-
STL
32h 58m
2 stops
$857Air Canada
Sat, Oct 10 - Fri, Nov 13
United Airlines Logo
4:55 pm - 8:20 am
STL
-
LIS
33h 25m
1 stop
United Airlines Logo
5:00 am - 1:55 pm
LIS
-
STL
14h 55m
1 stop
$863United Airlines
Sat, Oct 10 - Fri, Nov 13
American Airlines Logo
6:20 am - 9:05 am
STL
-
LIS
20h 45m
1 stop
American Airlines Logo
11:05 am - 11:41 pm
LIS
-
STL
18h 36m
1 stop
$901American Airlines
Thu, Oct 15 - Thu, Oct 22
Air Canada Logo
12:10 pm - 9:20 am
STL
-
LIS
15h 10m
1 stop
Air Canada Logo
11:25 am - 3:38 pm
LIS
-
STL
34h 13m
2 stops
$903Air Canada
Thu, Oct 15 - Thu, Oct 22
United Airlines Logo
12:10 pm - 9:20 am
STL
-
LIS
15h 10m
1 stop
United Airlines Logo
1:00 pm - 4:26 pm
LIS
-
STL
33h 26m
2 stops
$907United Airlines
Thu, Oct 15 - Thu, Oct 22
Air Canada Logo
6:40 am - 9:20 am
STL
-
LIS
20h 40m
2 stops
Air Canada Logo
11:25 am - 3:38 pm
LIS
-
STL
34h 13m
2 stops
$908Air Canada
Thu, Oct 15 - Thu, Oct 22
American Airlines Logo
9:38 am - 7:45 am
STL
-
LIS
16h 07m
2 stops
American Airlines Logo
11:05 am - 11:41 pm
LIS
-
STL
18h 36m
1 stop
$909American Airlines
Thu, Oct 15 - Thu, Oct 22
United Airlines Logo
4:55 pm - 8:20 am
STL
-
LIS
33h 25m
1 stop
United Airlines Logo
1:00 pm - 3:30 pm
LIS
-
STL
32h 30m
1 stop
$910United Airlines
Sat, Oct 10 - Sat, Nov 14

Air Canada flights from St. Louis to Lisbon

Our best Air Canada deals on St. Louis to Lisbon flight tickets
Air Canada
Oct 10
STL6:49 pmLambert-St Louis
32h 31m
2 stops
LIS9:20 amLisbon Humberto Delgado
Nov 13
LIS11:20 amLisbon Humberto Delgado
32h 58m
2 stops
STL2:18 pmLambert-St Louis
$857
Air Canada
Oct 15
STL12:10 pmLambert-St Louis
15h 10m
1 stop
LIS9:20 amLisbon Humberto Delgado
Oct 22
LIS11:25 amLisbon Humberto Delgado
34h 13m
2 stops
STL3:38 pmLambert-St Louis
$903
Air Canada
Oct 15
STL6:40 amLambert-St Louis
20h 40m
2 stops
LIS9:20 amLisbon Humberto Delgado
Oct 22
LIS11:25 amLisbon Humberto Delgado
34h 13m
2 stops
STL3:38 pmLambert-St Louis
$908

United Airlines flights from St. Louis to Lisbon

Our best United Airlines deals on St. Louis to Lisbon flight tickets
United Airlines
Oct 10
STL6:49 pmLambert-St Louis
32h 31m
2 stops
LIS9:20 amLisbon Humberto Delgado
Nov 13
LIS5:00 amLisbon Humberto Delgado
14h 55m
1 stop
STL1:55 pmLambert-St Louis
$855
United Airlines
Oct 10
STL4:55 pmLambert-St Louis
33h 25m
1 stop
LIS8:20 amLisbon Humberto Delgado
Nov 13
LIS5:00 amLisbon Humberto Delgado
14h 55m
1 stop
STL1:55 pmLambert-St Louis
$863
United Airlines
Oct 15
STL12:10 pmLambert-St Louis
15h 10m
1 stop
LIS9:20 amLisbon Humberto Delgado
Oct 22
LIS1:00 pmLisbon Humberto Delgado
33h 26m
2 stops
STL4:26 pmLambert-St Louis
$907

momondo Fare Finder

 
Customize your flight search to find flights from St. Louis to Lisbon 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, momondo users made 832,500 searches. Data last updated April 27, 2026.
Use the filters below to find and compare flights from St. Louis to Lisbon that are best for you.

Fly from

Fly to

Route

Depart

Return

Price

Cheapest round-trip

St. LouisLisbon

STL - LIS

STLLIS

Lambert-St Louis

Thu 10/15

12:43 pm-11:25 pm

2 stops28h 42m

Lisbon Humberto Delgado

Thu 10/22

6:35 am-11:25 pm

2 stops22h 50m

$810

St. LouisLisbon

STL - LIS

STLLIS

Lambert-St Louis

Sat 10/10

6:49 pm-9:20 am

2 stops32h 31m

Lisbon Humberto Delgado

Fri 11/13

5:00 am-1:55 pm

1 stop14h 55m

$855

St. LouisLisbon

STL - LIS

STLLIS

Lambert-St Louis

Sat 10/10

6:49 pm-9:20 am

2 stops32h 31m

Lisbon Humberto Delgado

Fri 11/13

11:20 am-2:18 pm

2 stops32h 58m

$857

St. LouisLisbon

STL - LIS

STLLIS

Lambert-St Louis

Sat 10/10

4:55 pm-8:20 am

1 stop33h 25m

Lisbon Humberto Delgado

Fri 11/13

5:00 am-1:55 pm

1 stop14h 55m

$863

St. LouisLisbon

STL - LIS

STLLIS

Lambert-St Louis

Thu 10/15

6:20 am-9:05 am

1 stop20h 45m

Lisbon Humberto Delgado

Thu 10/22

11:05 am-11:41 pm

1 stop18h 36m

$901

St. LouisLisbon

STL - LIS

STLLIS

Lambert-St Louis

Thu 10/15

12:10 pm-9:20 am

1 stop15h 10m

Lisbon Humberto Delgado

Thu 10/22

11:25 am-3:38 pm

2 stops34h 13m

$903

St. LouisLisbon

STL - LIS

STLLIS

Lambert-St Louis

Thu 10/15

12:10 pm-9:20 am

1 stop15h 10m

Lisbon Humberto Delgado

Thu 10/22

1:00 pm-4:26 pm

2 stops33h 26m

$907

St. LouisLisbon

STL - LIS

STLLIS

Lambert-St Louis

Thu 10/15

6:40 am-9:20 am

2 stops20h 40m

Lisbon Humberto Delgado

Thu 10/22

11:25 am-3:38 pm

2 stops34h 13m

$908
Quickest round-trip

St. LouisLisbon

STL - LIS

STLLIS

Lambert-St Louis

Thu 10/15

9:38 am-7:45 am

2 stops16h 07m

Lisbon Humberto Delgado

Thu 10/22

11:05 am-11:41 pm

1 stop18h 36m

$909

St. LouisLisbon

STL - LIS

STLLIS

Lambert-St Louis

Sat 10/10

4:55 pm-8:20 am

1 stop33h 25m

Lisbon Humberto Delgado

Sat 11/14

1:00 pm-3:30 pm

1 stop32h 30m

$910

Flights are sorted by cheapest round-trip flights first.

Showing 1-10 of 20 resultsSorted by cheapest first
1
2

See travel insights to Lisbon from

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

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

What is the typical price of a round-trip flight between St. Louis and Lisbon?

What is the cheapest month to fly to Lisbon?

In general, April is the cheapest month to fly from St. Louis to Lisbon. Due to it being the ‘off-season’ during this time, you can expect flight prices to be around $589. If you are unable to visit Lisbon during the month of April, then departing from St. Louis during the month January is also very affordable. Most momondo users find prices during this month for around $617.

How far in advance should I book a flight from St. Louis to Lisbon?

You are more likely to see cheaper flights to Lisbon from St. Louis when booking week ahead of your departure date. In general, you can expect to find flights to Lisbon for around $1,040 when searching week out. However, flight prices might be lower outside of this timeframe. For example, people recently found flights to Lisbon from St. Louis for as low as $719 on momondo.

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

You could potentially save up to 7% on your flight if you consider stops on a St. Louis to Lisbon flight.

When to book flights from St. Louis to Lisbon

Are you open to changing your travel dates? Check out the ideal times to fly from St. Louis to Lisbon according to our flight data. Find out which month and days have the cheapest flights.
Estimated round-trip price

Cheap St. Louis to Lisbon (STL to LIS) flight deals and tips

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

Fastest flight time

13h 36m

Direct flights

None
The fastest flight from St. Louis to Lisbon takes 13h 36m
There are no direct flights from St. Louis to Lisbon. There are no popular flight routes from St. Louis to Lisbon.
Search flight deals

Frequently asked questions about flying from St. Louis to Lisbon

  • How far is Lambert-St Louis to Lisbon Humberto Delgado by plane?

    The distance between Lambert-St Louis and Lisbon Humberto Delgado is about 4210.2 mi. A reasonable flight in good conditions will take 13h 36m.

  • When did momondo last update prices for flights from Lambert-St Louis Airport to Lisbon Humberto Delgado Airport?

    Prices for flights from Lambert-St Louis Airport to Lisbon Humberto Delgado Airport were last updated today.

  • How many operators does momondo search for flights from Lambert-St Louis Airport to Lisbon Humberto Delgado Airport?

  • How old do you have to be to fly from Lambert-St Louis Airport to Lisbon Humberto Delgado 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 Lambert-St Louis Airport to Lisbon Humberto Delgado Airport.

  • What documentation or ID do you need to fly to Lisbon Humberto Delgado Airport?

    The travel and health documents you'll need for your trip to Lisbon Humberto Delgado Airport may differ based on your itinerary and personal situation. Typically, you should have several documents on hand, such as a national ID card or driver's license and a passport that is valid for six months after your intended arrival at Lisbon Humberto Delgado Airport. It is always advisable to seek advice from your airline or a trusted third party, such as IATA.

  • What is the most popular airline from St. Louis to Lisbon?

Best airlines flying from St. Louis to Lisbon

Compare and see reviews for airlines that fly from St. Louis to Lisbon with momondo
Airline
Rating
Free Cancellation
Price
American AirlinesPriceFrom $505Free CancellationRating
7.1
11,674 reviews
Search American Airlines flights
DeltaPriceFrom $558Free CancellationRating
7.9
8,466 reviews
Search Delta flights
IberiaPriceFrom $571Free CancellationRating
7.0
3,202 reviews
Search Iberia flights
British AirwaysPriceFrom $574Free CancellationRating
6.7
7,927 reviews
Search British Airways flights
LufthansaPriceFrom $606Free CancellationRating
6.8
7,956 reviews
Search Lufthansa flights
United AirlinesPriceFrom $617Free CancellationRating
7.4
9,672 reviews
Search United Airlines flights
Air CanadaPriceFrom $675Free CancellationRating
7.1
10,974 reviews
Search Air Canada flights

Traveling to a place near Lisbon?

Book flights to Lisbon if you plan to visit one of these locations
Sintra
Ericeira
Fátima
Nazaré
Setúbal
Peniche
Estoril
Evora
Oeiras
Leiria
Sesimbra
Figueira da Foz
Zambujeira do Mar
Óbidos
Batalha
Tomar
Comporta
Torres Vedras
Almada
Sines

Why use momondo?

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

It is quick and easy to find St. Louis to Lisbon flights on momondo. We search and return numerous flight options from various airlines and agents. You can then use our filters to narrow your search until you have found the most convenient flight to Lisbon that suits you.

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

momondo does allow users to show only those flights to Lisbon from St. Louis which offer a flexible booking policy as well as other useful filters and features.

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

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 Lisbon from St. Louis.

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

Yes momondo offers price alerts on flights to Lisbon from St. Louis. 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.

An easier way to manage your Lisbon trip

We make it super easy to schedule, organize and travel with friends or family. Trips is free — and available to use no matter where you book.
Start using Trips
Find my bookings

Get notified when prices go down

Daily price changes in your inbox - only with Price Alerts.
1 adult
Wed 5/27
Wed 6/3
By creating a price alert you accept our terms of use and privacy policy.

Find better results for your trip to Portugal