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Cheap flights from St. Louis to Portugal from $473

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 5/30. 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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0 bags

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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.
United Airlines Logo
8:25 am - 10:30 amSTL-LIS
20h 05m1 stop
United Airlines Logo
10:15 am - 4:40 pmLIS-STL
12h 25m1 stop
$632United Airlines
Find Deal
Tue, Oct 21 - Tue, Nov 4
United Airlines Logo
4:05 pm - 11:10 amSTL-LIS
13h 05m1 stop
United Airlines Logo
10:15 am - 4:40 pmLIS-STL
12h 25m1 stop
$634United Airlines
Find Deal
Sun, Oct 19 - Tue, Nov 4
Air Canada Logo
12:28 pm - 9:20 amSTL-LIS
14h 52m2 stops
Air Canada Logo
11:00 am - 2:18 pmLIS-STL
33h 18m2 stops
$666Air Canada
Find Deal
Sun, Oct 19 - Mon, Nov 3
Air Canada Logo
4:05 pm - 11:05 amSTL-LIS
13h 00m1 stop
Air Canada Logo
11:00 am - 2:18 pmLIS-STL
33h 18m2 stops
$668Air Canada
Find Deal
Sun, Oct 19 - Mon, Nov 3
Iberia Logo
2:39 pm - 9:05 amSTL-LIS
12h 26m1 stop
Iberia Logo
11:05 am - 8:13 pmLIS-STL
15h 08m1 stop
$897Iberia
Find Deal
Sat, Aug 16 - Sat, Aug 30
American Airlines Logo
11:38 am - 11:40 amSTL-OPO
18h 02m2 stops
American Airlines Logo
8:15 am - 8:23 pmOPO-STL
18h 08m2 stops
$937American Airlines
Find Deal
Fri, Sep 19 - Sat, Sep 27
Lufthansa Logo
12:28 pm - 11:15 amSTL-OPO
16h 47m2 stops
Lufthansa Logo
12:10 pm - 3:38 pmOPO-STL
33h 28m2 stops
$964Lufthansa
Find Deal
Thu, Sep 25 - Sun, Oct 5
Iberia Logo
2:39 pm - 9:05 amSTL-LIS
12h 26m1 stop
Iberia Logo
11:05 am - 8:13 pmLIS-STL
15h 08m1 stop
$1,017Iberia
Find Deal
Thu, Aug 7 - Thu, Aug 14
American Airlines Logo
6:10 am - 9:05 amSTL-LIS
20h 55m1 stop
American Airlines Logo
11:05 am - 8:24 pmLIS-STL
15h 19m1 stop
$1,059American Airlines
Find Deal
Fri, Jul 18 - Wed, Jul 23
Lufthansa Logo
5:30 pm - 10:45 pmSTL-OPO
23h 15m2 stops
Lufthansa Logo
4:35 pm - 1:30 pmOPO-STL
26h 55m1 stop
$1,116Lufthansa
Find Deal
Fri, Sep 19 - Sat, Sep 27

United Airlines flights from St. Louis to Portugal

Our best United Airlines deals on St. Louis to Portugal flight tickets
United Airlines
Oct 21
STL8:25 amLambert-St Louis
20h 05m
1 stop
LIS10:30 amLisbon Humberto Delgado
Nov 4
LIS10:15 amLisbon Humberto Delgado
12h 25m
1 stop
STL4:40 pmLambert-St Louis
United Airlines
Oct 19
STL4:05 pmLambert-St Louis
13h 05m
1 stop
LIS11:10 amLisbon Humberto Delgado
Nov 4
LIS10:15 amLisbon Humberto Delgado
12h 25m
1 stop
STL4:40 pmLambert-St Louis
United Airlines
Oct 19
STL12:28 pmLambert-St Louis
16h 02m
2 stops
LIS10:30 amLisbon Humberto Delgado
Nov 4
LIS10:15 amLisbon Humberto Delgado
12h 25m
1 stop
STL4:40 pmLambert-St Louis

Air Canada flights from St. Louis to Portugal

Our best Air Canada deals on St. Louis to Portugal flight tickets
Air Canada
Oct 19
STL12:28 pmLambert-St Louis
14h 52m
2 stops
LIS9:20 amLisbon Humberto Delgado
Nov 3
LIS11:00 amLisbon Humberto Delgado
33h 18m
2 stops
STL2:18 pmLambert-St Louis
Air Canada
Oct 19
STL4:05 pmLambert-St Louis
13h 00m
1 stop
LIS11:05 amLisbon Humberto Delgado
Nov 3
LIS11:00 amLisbon Humberto Delgado
33h 18m
2 stops
STL2:18 pmLambert-St Louis
Air Canada
Oct 21
STL12:28 pmLambert-St Louis
14h 52m
2 stops
LIS9:20 amLisbon Humberto Delgado
Oct 31
LIS11:00 amLisbon Humberto Delgado
28h 27m
2 stops
STL10:27 amLambert-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 $659, 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 $974 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 $857 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

$473

Fastest flight time

10h 23m

Direct flights

None

Airports in Portugal

2 airports
The best one-way flight to Portugal from St. Louis in the past 72 hours is $473. The best round-trip flight deal from St. Louis to Portugal found on momondo in the last 72 hours is $632.
The fastest flight from St. Louis to Portugal takes 10h 23m
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
2,686 reviews
Search Iberia flights
LufthansaPriceFrom $601Free CancellationRating
6.7
7,030 reviews
Search Lufthansa flights
United AirlinesPriceFrom $603Free CancellationRating
7.4
8,685 reviews
Search United Airlines flights
American AirlinesPriceFrom $618Free CancellationRating
7.2
10,000 reviews
Search American Airlines flights
British AirwaysPriceFrom $625Free CancellationRating
6.6
6,809 reviews
Search British Airways flights
DeltaPriceFrom $680Free CancellationRating
8.0
7,920 reviews
Search Delta flights
Air CanadaPriceFrom $779Free CancellationRating
7.0
9,198 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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