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Cheap flights from St. Louis to Portugal from $608

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 4/28. 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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Cheap round-trip flights

KAYAK's recommended round-trip deals from the most popular airlines that fly from St. Louis to Portugal.
Air Canada Logo
4:00 pm - 9:20 amSTL-OPO
35h 20m2 stops
Air Canada Logo
12:50 pm - 12:25 pmOPO-STL
29h 35m2 stops
$679Air Canada
Find Deal
Tue, Aug 19 - Tue, Aug 26
Air Canada Logo
4:00 pm - 9:20 amSTL-OPO
35h 20m2 stops
Air Canada Logo
12:50 pm - 8:00 pmOPO-STL
13h 10m1 stop
$692Air Canada
Find Deal
Tue, Aug 19 - Tue, Aug 26
United Airlines Logo
8:00 am - 9:45 amSTL-OPO
19h 45m2 stops
United Airlines Logo
6:00 am - 3:47 pmOPO-STL
15h 47m2 stops
$773United Airlines
Find Deal
Sun, May 4 - Sun, May 11
United Airlines Logo
8:25 am - 10:30 amSTL-LIS
20h 05m1 stop
United Airlines Logo
11:25 am - 3:47 pmLIS-STL
34h 22m3 stops
$789United Airlines
Find Deal
Tue, Apr 29 - Tue, May 6
Delta Logo
1:46 pm - 3:30 pmSTL-OPO
19h 44m2 stops
Delta Logo
5:00 am - 9:36 pmOPO-STL
22h 36m2 stops
$846Delta
Find Deal
Sat, Apr 26 - Sun, May 4
Delta Logo
1:46 pm - 11:15 amSTL-LIS
15h 29m2 stops
Delta Logo
5:00 am - 5:56 pmLIS-STL
18h 56m2 stops
$896Delta
Find Deal
Wed, Apr 16 - Sun, Apr 27
Lufthansa Logo
3:30 pm - 11:25 amSTL-LIS
13h 55m1 stop
Lufthansa Logo
4:15 pm - 1:30 pmLIS-STL
27h 15m1 stop
$903Lufthansa
Find Deal
Sun, Apr 27 - Sat, May 3
Lufthansa Logo
3:30 pm - 9:50 pmSTL-LIS
24h 20m2 stops
Lufthansa Logo
4:15 pm - 1:30 pmLIS-STL
27h 15m1 stop
$924Lufthansa
Find Deal
Sun, Apr 27 - Sat, May 3
British Airways Logo
12:00 pm - 4:15 pmSTL-LIS
22h 15m2 stops
British Airways Logo
8:45 pm - 6:02 pmLIS-STL
27h 17m2 stops
$967British Airways
Find Deal
Sat, Apr 26 - Fri, May 2
British Airways Logo
8:01 pm - 5:55 pmSTL-LIS
15h 54m2 stops
British Airways Logo
8:45 pm - 8:23 pmLIS-STL
29h 38m2 stops
$1,032British Airways
Find Deal
Tue, Sep 9 - Mon, Sep 15

Scandinavian Airlines flights from St. Louis to Portugal

Our best Scandinavian Airlines deals on St. Louis to Portugal flight tickets
Scandinavian Airlines
Aug 22
STL1:30 pmLambert-St Louis
37h 30m
2 stops
LIS9:00 amLisbon Humberto Delgado
Aug 31
LIS8:15 pmLisbon Humberto Delgado
33h 24m
2 stops
STL11:39 pmLambert-St Louis
Scandinavian Airlines
Aug 22
STL1:30 pmLambert-St Louis
37h 30m
2 stops
LIS9:00 amLisbon Humberto Delgado
Aug 29
LIS6:55 amLisbon Humberto Delgado
22h 44m
2 stops
STL11:39 pmLambert-St Louis
Scandinavian Airlines
Aug 25
STL1:30 pmLambert-St Louis
25h 10m
2 stops
LIS8:40 pmLisbon Humberto Delgado
Sep 1
LIS7:15 amLisbon Humberto Delgado
22h 24m
2 stops
STL11:39 pmLambert-St Louis

United Airlines flights from St. Louis to Portugal

Our best United Airlines deals on St. Louis to Portugal flight tickets
United Airlines
May 4
STL8:00 amLambert-St Louis
19h 45m
2 stops
OPO9:45 amPorto
May 11
OPO6:00 amPorto
15h 47m
2 stops
STL3:47 pmLambert-St Louis
United Airlines
Apr 29
STL8:25 amLambert-St Louis
20h 05m
1 stop
LIS10:30 amLisbon Humberto Delgado
May 6
LIS11:25 amLisbon Humberto Delgado
34h 22m
3 stops
STL3:47 pmLambert-St Louis
United Airlines
Apr 20
STL8:25 amLambert-St Louis
20h 05m
1 stop
LIS10:30 amLisbon Humberto Delgado
May 6
LIS11:25 amLisbon Humberto Delgado
14h 33m
1 stop
STL7:58 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 month to fly to Portugal?

The cheapest month to fly to Portugal from St. Louis is in November. Flight prices, which tend to average around $656, are often lower during this time because this is during the off-season. If you aren’t able to travel during the month of November, then book flights to Portugal from St. Louis during February instead. Flights to Portugal in February, while not as cheap as those in November, still average around $670.

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 $894. 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.

What is the cheapest time of day to depart on your flight to Portugal?

Our most recent data shows that the best time of day to fly to Portugal is at noon. Flights from St. Louis to Portugal during this time can be as low as $884. In the afternoon is when there is more demand to fly to Portugal, so prices are often more expensive at around $1,083 per ticket.

How far in advance should I book a flight to Portugal?

You are more likely to see cheaper flights to Portugal from St. Louis when booking 25 weeks ahead of your departure date. In general, you can expect to find flights to Portugal for around $969 when searching 25 weeks out.However, flight prices might be lower outside of this timeframe. For example, people recently found flights to Portugal from St. Louis for as low as $901 on momondo.

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

$608

Fastest flight time

10h 24m

Direct flights

None

Airports in Portugal

2 airports
The best one-way flight to Portugal from St. Louis in the past 72 hours is $608. The best round-trip flight deal from St. Louis to Portugal found on momondo in the last 72 hours is $679.
The fastest flight from St. Louis to Portugal takes 10h 24m
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
IberiaPriceFrom $566Free CancellationRating
7.0
2,657 reviews
Search Iberia flights
LufthansaPriceFrom $601Free CancellationRating
6.7
6,963 reviews
Search Lufthansa flights
United AirlinesPriceFrom $601Free CancellationRating
7.4
8,616 reviews
Search United Airlines flights
American AirlinesPriceFrom $618Free CancellationRating
7.2
10,000 reviews
Search American Airlines flights
British AirwaysPriceFrom $625Free CancellationRating
6.6
6,718 reviews
Search British Airways flights
DeltaPriceFrom $680Free CancellationRating
8.0
7,897 reviews
Search Delta flights
Air CanadaPriceFrom $779Free CancellationRating
7.0
9,029 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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