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Cheap flights from St. Louis to Portugal from $322

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 Portugal departing on 12/4. Fares may change, and may not be available for all flights or travel dates. Click the price to refresh the search for this deal.
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Find the cheapest flights from St. Louis to Portugal

Cheap round-trip flights

These are some of the best round-trip flight deals from St. Louis to Portugal that have been recently found on momondo from popular airlines, departing in the coming months.

Cheap one-way flights

Flying one-way? These are some of the best deals recently discovered on momondo for flights from St. Louis to Portugal.

Cheap last minute flights

Planning a quick getaway from St. Louis to Portugal? These are the last-minute flight deals available now.

Cheap direct flights

If you prefer a non-stop journey, check out our latest direct flight deals to Portugal, so you can enjoy a seamless trip without layovers.

Cheap bus & train deals from St. Louis to Portugal

Find recent round-trip train or bus tickets from St. Louis to Portugal.

All round-trip flight deals to Portugal

The cheapest plane tickets to Portugal found on KAYAK recently.
8:25 am - 10:15 amSTL-LIS
19h 50m1 stop
11:00 am - 2:31 pmLIS-STL
33h 31m2 stops
$553United Airlines
Find Deal
mié., feb. 26 - vie., mar. 7
10:18 am - 10:15 amSTL-LIS
17h 57m2 stops
11:00 am - 3:31 pmLIS-STL
34h 31m2 stops
$557United Airlines
Find Deal
mié., feb. 26 - vie., mar. 7
9:25 am - 7:40 amSTL-LIS
16h 15m2 stops
6:30 am - 9:40 pmLIS-STL
21h 10m2 stops
$583Iberia
Find Deal
mié., feb. 26 - vie., mar. 7
3:45 pm - 11:35 amSTL-OPO
13h 50m1 stop
6:00 am - 5:36 pmOPO-STL
17h 36m2 stops
$612Lufthansa
Find Deal
dom., ene. 12 - mar., ene. 28
2:10 pm - 9:15 amSTL-LIS
13h 05m1 stop
6:30 am - 8:43 pmLIS-STL
20h 13m2 stops
$618Iberia
Find Deal
mar., feb. 18 - mar., feb. 25
1:02 pm - 11:35 amSTL-OPO
16h 33m2 stops
6:00 am - 5:36 pmOPO-STL
17h 36m2 stops
$619Lufthansa
Find Deal
dom., ene. 12 - mar., ene. 28
12:27 pm - 8:55 amSTL-LIS
14h 28m2 stops
6:30 am - 6:05 pmLIS-STL
17h 35m2 stops
$622American Airlines
Find Deal
dom., feb. 16 - vie., feb. 28
5:36 pm - 9:20 amSTL-LIS
33h 44m2 stops
11:00 am - 3:31 pmLIS-STL
33h 31m2 stops
$655Air Canada
Find Deal
sáb., mar. 1 - sáb., mar. 15
5:30 pm - 9:20 amSTL-LIS
33h 50m2 stops
11:00 am - 2:14 pmLIS-STL
33h 14m2 stops
$658Air Canada
Find Deal
mar., ene. 7 - mar., ene. 14
9:30 am - 9:05 amSTL-LIS
17h 35m2 stops
11:15 am - 7:23 pmLIS-STL
14h 08m2 stops
$673American Airlines
Find Deal
lun., ene. 6 - mié., ene. 22
5:02 pm - 6:55 amSTL-LIS
55h 53m3 stops
mié., dic. 4
5:02 pm - 8:40 amSTL-LIS
57h 38m2 stops
mié., dic. 4
5:02 pm - 9:40 amSTL-LIS
58h 38m3 stops
mar., dic. 3
3:45 pm - 11:40 amSTL-OPO
13h 55m1 stop
$519Lufthansa
Find Deal
vie., feb. 14
6:40 am - 8:55 amSTL-LIS
20h 15m1 stop
$534American Airlines
Find Deal
mié., dic. 4
8:25 am - 10:10 amSTL-LIS
19h 45m1 stop
$584United Airlines
Find Deal
jue., dic. 5
3:50 pm - 9:20 amSTL-LIS
11h 30m1 stop
$686Air Canada
Find Deal
lun., dic. 2
12:51 pm - 8:55 amSTL-LIS
14h 04m1 stop
$690American Airlines
Find Deal
dom., dic. 1
12:37 pm - 10:00 amSTL-LIS
15h 23m1 stop
$742United Airlines
Find Deal
sáb., nov. 30
3:45 pm - 11:30 amSTL-LIS
13h 45m1 stop
$760Lufthansa
Find Deal
vie., nov. 29
5:21 pm - 9:20 amSTL-LIS
33h 59m3 stops
2:05 pm - 4:26 pmLIS-STL
32h 21m3 stops
$1,581
Find Deal
sáb., nov. 23 - sáb., nov. 30
5:40 pm - 9:20 amSTL-LIS
33h 40m2 stops
11:00 am - 5:15 pmLIS-STL
36h 15m2 stops
$1,583United Airlines
Find Deal
sáb., nov. 23 - dom., dic. 1
5:40 pm - 9:20 amSTL-LIS
33h 40m2 stops
10:30 am - 9:59 pmLIS-STL
17h 29m1 stop
$1,595
Find Deal
sáb., nov. 23 - sáb., nov. 30
1:46 pm - 9:05 amSTL-LIS
13h 19m1 stop
10:30 am - 9:59 pmLIS-STL
17h 29m1 stop
$1,662British Airways
Find Deal
sáb., nov. 23 - sáb., nov. 30
11:51 am - 9:05 amSTL-LIS
15h 14m2 stops
10:30 am - 9:59 pmLIS-STL
17h 29m1 stop
$1,666American Airlines
Find Deal
sáb., nov. 23 - sáb., nov. 30
6:00 am - 9:05 amSTL-LIS
21h 05m1 stop
10:30 am - 9:59 pmLIS-STL
17h 29m1 stop
$1,672American Airlines
Find Deal
sáb., nov. 23 - sáb., nov. 30
5:40 pm - 9:20 amSTL-LIS
33h 40m2 stops
6:40 pm - 10:10 pmLIS-STL
33h 30m2 stops
$1,828
Find Deal
sáb., nov. 23 - dom., dic. 1
1:05 pm - 11:25 amSTL-LIS
16h 20m2 stops
2:05 pm - 4:26 pmLIS-STL
32h 21m3 stops
$1,860
Find Deal
sáb., nov. 23 - sáb., nov. 30
8:25 am - 10:00 amSTL-LIS
19h 35m1 stop
11:00 am - 5:15 pmLIS-STL
36h 15m2 stops
$1,944United Airlines
Find Deal
sáb., nov. 23 - dom., dic. 1
1:46 pm - 9:05 amSTL-LIS
13h 19m1 stop
10:30 am - 9:59 pmLIS-STL
17h 29m1 stop
$2,138British Airways
Find Deal
sáb., nov. 23 - sáb., nov. 30

United Airlines flights from St. Louis to Portugal

Our best United Airlines deals on St. Louis to Portugal flight tickets
United Airlines
Feb 26
STL8:25 amLambert-St Louis
19h 50m
1 stop
LIS10:15 amLisbon Humberto Delgado
Mar 7
LIS11:00 amLisbon Humberto Delgado
33h 31m
2 stops
STL2:31 pmLambert-St Louis
United Airlines
Feb 26
STL10:18 amLambert-St Louis
17h 57m
2 stops
LIS10:15 amLisbon Humberto Delgado
Mar 7
LIS11:00 amLisbon Humberto Delgado
34h 31m
2 stops
STL3:31 pmLambert-St Louis
United Airlines
Feb 21
STL8:25 amLambert-St Louis
19h 50m
1 stop
LIS10:15 amLisbon Humberto Delgado
Mar 5
LIS11:00 amLisbon Humberto Delgado
33h 23m
2 stops
STL2:23 pmLambert-St Louis

Iberia flights from St. Louis to Portugal

Our best Iberia deals on St. Louis to Portugal flight tickets
Iberia
Feb 26
STL9:25 amLambert-St Louis
16h 15m
2 stops
LIS7:40 amLisbon Humberto Delgado
Mar 7
LIS6:30 amLisbon Humberto Delgado
21h 10m
2 stops
STL9:40 pmLambert-St Louis
Iberia
Feb 18
STL2:10 pmLambert-St Louis
13h 05m
1 stop
LIS9:15 amLisbon Humberto Delgado
Feb 25
LIS6:30 amLisbon Humberto Delgado
20h 13m
2 stops
STL8:43 pmLambert-St Louis
Iberia
Feb 13
STL2:10 pmLambert-St Louis
12h 55m
1 stop
LIS9:05 amLisbon Humberto Delgado
Feb 25
LIS6:30 amLisbon Humberto Delgado
20h 13m
2 stops
STL8:43 pmLambert-St Louis

See travel insights to Portugal from

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

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 cheapest day to depart on your flight to Portugal?

According to our data, Monday is the cheapest day to fly to Portugal from St. Louis. The lowest ticket price found for a Monday departure recently was $835. Keep in mind that prices can always vary depending on your route and whether or not you are flying domestic or international. The most expensive day to fly to Portugal is Thursday, with ticket prices averaging around $1,087.

Cheap St. Louis to Portugal flight deals and tips

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

Best Price Found

$322

Fastest flight time

10h 45m

Direct flights

None

Airports in Portugal

2 airports
The best one-way flight to Portugal from St. Louis in the past 72 hours is $322. The best round-trip flight deal from St. Louis to Portugal found on momondo in the last 72 hours is $553.
The fastest flight from St. Louis to Portugal takes 10h 45m
There are no direct flights from St. Louis to Portugal. Popular non-direct routes for this connection are Lambert-St Louis Airport - Lisbon Humberto Delgado Airport and Lambert-St Louis Airport - Porto Airport.
There are 2 airports near Portugal: Lisbon Humberto Delgado (LIS), Porto (OPO)

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

    Prices for flights from Lambert-St Louis Airport to Portugal are refreshed on a daily basis.

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

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

    The minimum age for a child to fly alone is five, but airlines that offer an unaccompanied minor (UNMR) service may have their own age limitations. Flight duration, scheduling, and layovers are among the considerations that may influence age limits. We recommend that you double-check with the airline you are booking with for travel from Lambert-St Louis Airport to Portugal.

  • What documentation or ID do you need to fly to Portugal?

    The travel and health documents you'll need for your trip to Portugal 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 Portugal. It is always advisable to seek advice from your airline or a trusted third party, such as IATA.


Best airlines flying from St. Louis to Portugal

Compare and see reviews for airlines that fly from St. Louis to Portugal with momondo
Airline
Rating
Free Cancellation
Price
LufthansaPriceFrom $461Free CancellationRating
6.8
7,143 reviews
Search Lufthansa flights
British AirwaysPriceFrom $554Free CancellationRating
6.6
6,831 reviews
Search British Airways flights
United AirlinesPriceFrom $557Free CancellationRating
7.4
9,172 reviews
Search United Airlines flights
IberiaPriceFrom $566Free CancellationRating
7.0
2,661 reviews
Search Iberia flights
DeltaPriceFrom $610Free CancellationRating
8.0
8,755 reviews
Search Delta flights
American AirlinesPriceFrom $629Free CancellationRating
7.2
10,000 reviews
Search American Airlines flights
KLMPriceFrom $655Free CancellationRating
7.8
1,349 reviews
Search KLM flights
Air CanadaPriceFrom $771Free CancellationRating
7.0
8,246 reviews
Search Air Canada flights

Why use momondo?

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

It is quick and easy to find St. Louis to Portugal 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 Portugal that suits you.

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

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

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

Once you have performed a search for St. Louis to Portugal flights, momondo helps you find the right one by offering useful filters to narrow down your flight selection. Flights can be filtered by multiple factors such as airline, airport and price; but also by other criteria like aircraft type and payment method.

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

If you are not ready to book a flight from St. Louis to Portugal now, use our insights above to find helpful tips or alternatively set up a price alert, where momondo will track prices on flights to Portugal and let you know when they change.


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