$481 Find Cheap Flights from Portugal to St. Louis

This is the cheapest one-way flight price found by a KAYAK user in the last 72 hours by searching for a flight to St. Louis departing on 4/30. Fares are subject to change and may not be available on all flights or dates of travel. Click the price to replicate the search for this deal.
1 adult
1 adult, Economy, 0 bags

KAYAK searches hundreds of travel sites at once for deals on flights to St. Louis

 
These are the airlines KAYAK users have selected most often from within our search results for flights to St. Louis, as well as popular online travel agencies
These are the airlines KAYAK users have selected most often from within our search results for flights to St. Louis, as well as popular online travel agencies
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Everything you should know

Cheapest round-trip
$744
Iberia
Fri 3/13Fri 3/20
LIS - STL • 1 stop
Cheapest one-way
$481
Multiple Airlines
Thu 4/30
LIS - STL • 2 stops
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KAYAK searches 100s of sites at once to find you the best travel deals.
We hope you love your trip to St. Louis!
Flight Deals
Booking Insights
Flight Deals

Cheap Flights from Portugal to St. Louis

 
Here are some of the best deals found on KAYAK recently from the most popular airlines for round-trip flights from Portugal to St. Louis that are departing in the next months. While these flights were available on KAYAK in the last 72 hours, prices and availability are subject to change and deals may expire.
Discover the best prices for you by selecting your travel dates on KAYAK.

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

Fri, Mar 13 - Fri, Mar 20
Iberia Logo
11:05 am - 10:52 pm
LIS
-
STL
16h 47m
1 stop
Iberia Logo
2:00 pm - 8:45 am
STL
-
LIS
13h 45m
1 stop
$744Iberia
Fri, Mar 13 - Fri, Mar 20
American Airlines Logo
11:05 am - 10:58 pm
LIS
-
STL
16h 53m
2 stops
American Airlines Logo
9:36 am - 8:45 am
STL
-
LIS
18h 09m
2 stops
$757American Airlines
Thu, Feb 12 - Mon, Feb 16
Lufthansa Logo
6:00 am - 5:44 pm
OPO
-
STL
17h 44m
2 stops
Lufthansa Logo
11:39 am - 12:50 pm
STL
-
OPO
19h 11m
2 stops
$868Lufthansa
Sun, Mar 15 - Sun, Mar 22
United Airlines Logo
5:00 am - 9:07 pm
LIS
-
STL
21h 07m
2 stops
United Airlines Logo
8:17 am - 10:15 am
STL
-
LIS
20h 58m
2 stops
$897United Airlines
Sun, Mar 15 - Sun, Mar 22
British Airways Logo
11:05 am - 11:02 pm
LIS
-
STL
16h 57m
1 stop
British Airways Logo
2:00 pm - 9:05 am
STL
-
LIS
14h 05m
1 stop
$963British Airways
Fri, Mar 13 - Fri, Mar 20
Multiple Airlines Logo
11:35 am - 3:29 pm
LIS
-
STL
32h 54m
3 stops
Multiple Airlines Logo
4:50 pm - 9:10 pm
STL
-
LIS
23h 20m
2 stops
$1,180Multiple Airlines
Sun, Mar 15 - Sun, Mar 22
Multiple Airlines Logo
8:35 am - 3:29 pm
LIS
-
STL
35h 54m
3 stops
Multiple Airlines Logo
4:50 pm - 1:30 pm
STL
-
LIS
15h 40m
2 stops
$1,201Multiple Airlines
Thu, Feb 12 - Mon, Feb 16
Multiple Airlines Logo
11:10 am - 12:21 pm
OPO
-
STL
31h 11m
3 stops
Multiple Airlines Logo
4:05 pm - 2:55 pm
STL
-
OPO
16h 50m
2 stops
$1,608Multiple Airlines
Thu, Feb 12 - Mon, Feb 16
Multiple Airlines Logo
11:10 am - 3:29 pm
OPO
-
STL
34h 19m
3 stops
Multiple Airlines Logo
8:17 am - 1:05 pm
STL
-
OPO
22h 48m
3 stops
$1,809Multiple Airlines
Fri, Mar 13 - Fri, Mar 20
Multiple Airlines Logo
12:25 pm - 6:00 pm
LIS
-
STL
34h 35m
3 stops
Multiple Airlines Logo
9:37 am - 7:55 pm
STL
-
LIS
29h 18m
3 stops
$3,353Multiple Airlines
Booking Insights

KAYAK's insights & trends for flights to St. Louis

Get data-powered insights and trends for flights to St. Louis to help you find the cheapest flights, the best time to fly and much more.

How long is the flight to St. Louis?

The duration of your flight to St. Louis depends on your departure and arrival airports. Obviously any flights that include a layover will also be longer. The most popular routes to St. Louis on KAYAK are from Porto, which takes 16h 32m, and Lisbon, which takes 16h 47m.

How many direct flights to St. Louis are there each day?

There are around 253 direct flights from within Portugal to St. Louis every day. Most flights depart in the morning, with 7:00 am the most common departure time and 45% of flights departing in the morning.

Find deals

Good to know

Low seasonDecember
Cheapest flight$481
Best time to beat the crowds with an average 20% drop in price.
Most popular time to fly and prices are also 5% lower on average.
Flight from Lisbon to St. Louis

FAQs - booking St. Louis flights

  • How far is Lambert-St Louis Airport from central St. Louis?

    You’ll need to travel 13 miles to reach the St. Louis city center from Lambert-St Louis Airport.

  • What is the name of St. Louis’s airport?

    When flying to St. Louis, you'll arrive at Lambert-St Louis Airport (STL). The airport is also known as Lambert Field, Lambert-St Louis, St. Louis Lambert, or St. Louis Lambert Intl.

  • How does KAYAK find such low prices on flights to St. Louis?

    KAYAK is a travel search engine. That means we look across the web to find the best prices we can find for our users. With over 2 billion flight queries processed yearly, we are able to display a variety of prices and options on flights to St. Louis.

  • How does KAYAK's flight Price Forecast tool help me choose the right time to buy my flight ticket to St. Louis?

    KAYAK’s flight Price Forecast tool uses historical data to determine whether the price for a flight to St. Louis is likely to change within 7 days, so travelers know whether to wait or book now.

  • What is the Hacker Fare option on flights to St. Louis?

    Hacker Fares allow you to combine one-way tickets in order to save you money over a traditional round-trip ticket. You could then fly to St. Louis with an airline and back with another airline.

  • What is KAYAK's "flexible dates" feature and why should I care when looking for a flight to St. Louis?

    Sometimes travel dates aren't set in stone. If your preferred travel dates have some wiggle room, flexible dates will show you all the options when flying to St. Louis up to 3 days before/after your preferred dates. You can then pick the flights that suit you best.

  • How many direct flights to St. Louis are there each week?

    Each week there are around 1,771 direct flights from within Portugal to St. Louis. The most common day for departures is Sunday, with 17% of flights taking off on this day.

Top tips for finding cheap flights to St. Louis

  • Enter your preferred departure airport and travel dates into the search form above to unlock the latest St. Louis flight deals.

Traveling to a place near St. Louis?

Book flights to St. Louis if you plan to visit one of these locations
O'Fallon
Wentzville
Farmington
Eureka
Litchfield
Grafton
Shrewsbury
Glencoe

Everything you need to know for your flight to St. Louis

Information on the airport you'll fly into in St. Louis

St. Louis (STL)