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Cheap flights from Missouri to Portugal from $458

This is the cheapest one-way flight price found by a momondo user in the last 72 hours by searching for a flight from Missouri to Portugal departing on 6/13. 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

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Find the cheapest flights from Missouri to Portugal

Cheap round-trip flights

Enter your travel dates to find the best prices.
Multiple Airlines Logo
11:42 am - 8:50 am
STL
-
LIS
15h 08m
2 stops
Multiple Airlines Logo
5:00 am - 4:10 pm
LIS
-
STL
17h 10m
2 stops
$810Multiple Airlines
Sun, Apr 26 - Tue, May 12
Multiple Airlines Logo
9:40 pm - 11:05 pm
STL
-
LIS
19h 25m
1 stop
Multiple Airlines Logo
8:25 am - 7:33 pm
LIS
-
STL
17h 08m
2 stops
$811Multiple Airlines
Sun, Apr 26 - Tue, May 12
United Airlines Logo
7:55 pm - 9:20 am
MCI
-
LIS
31h 25m
2 stops
United Airlines Logo
12:20 pm - 12:52 am
LIS
-
MCI
18h 32m
2 stops
$816United Airlines
Mon, Oct 12 - Wed, Oct 21
United Airlines Logo
7:55 pm - 9:20 am
MCI
-
LIS
31h 25m
2 stops
United Airlines Logo
12:20 pm - 2:39 pm
LIS
-
MCI
32h 19m
1 stop
$817United Airlines
Mon, Oct 12 - Wed, Oct 21
British Airways Logo
9:40 pm - 11:05 pm
STL
-
LIS
19h 25m
1 stop
British Airways Logo
7:10 am - 7:30 pm
LIS
-
STL
18h 20m
1 stop
$828British Airways
Sun, Apr 26 - Tue, May 12
Delta Logo
4:13 pm - 10:25 am
STL
-
OPO
12h 12m
1 stop
Delta Logo
5:00 am - 5:06 pm
OPO
-
STL
18h 06m
2 stops
$842Delta
Sun, Oct 4 - Wed, Oct 21
Delta Logo
11:51 am - 10:25 am
STL
-
OPO
16h 34m
2 stops
Delta Logo
5:00 am - 5:06 pm
OPO
-
STL
18h 06m
2 stops
$846Delta
Sun, Oct 4 - Wed, Oct 21
KLM Logo
4:13 pm - 10:25 am
STL
-
OPO
12h 12m
1 stop
KLM Logo
12:40 pm - 5:06 pm
OPO
-
STL
34h 26m
1 stop
$856KLM
Sun, Oct 4 - Wed, Oct 21
British Airways Logo
12:59 pm - 9:05 am
STL
-
LIS
14h 06m
1 stop
British Airways Logo
7:10 am - 7:30 pm
LIS
-
STL
18h 20m
1 stop
$878British Airways
Tue, May 12 - Tue, May 19
KLM Logo
4:13 pm - 10:25 am
STL
-
OPO
12h 12m
1 stop
KLM Logo
12:40 pm - 5:06 pm
OPO
-
STL
34h 26m
1 stop
$942KLM
Sun, Oct 4 - Wed, Oct 21

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American Airlines flights from Missouri to Portugal

Our best American Airlines deals on Missouri to Portugal flight tickets
American Airlines
Apr 21
STL8:03 pmLambert-St Louis
15h 52m
2 stops
LIS5:55 pmLisbon Humberto Delgado
Apr 28
LIS8:25 amLisbon Humberto Delgado
17h 08m
2 stops
STL7:33 pmLambert-St Louis
$766
American Airlines
Apr 21
STL12:59 pmLambert-St Louis
14h 06m
1 stop
LIS9:05 amLisbon Humberto Delgado
Apr 28
LIS8:25 amLisbon Humberto Delgado
17h 08m
2 stops
STL7:33 pmLambert-St Louis
$769
American Airlines
Oct 17
MCI6:05 amKansas City
21h 00m
1 stop
LIS9:05 amLisbon Humberto Delgado
Oct 24
LIS8:25 amLisbon Humberto Delgado
15h 52m
2 stops
MCI6:17 pmKansas City
$860

United Airlines flights from Missouri to Portugal

Our best United Airlines deals on Missouri to Portugal flight tickets
United Airlines
Oct 12
MCI7:55 pmKansas City
31h 25m
2 stops
LIS9:20 amLisbon Humberto Delgado
Oct 21
LIS12:20 pmLisbon Humberto Delgado
18h 32m
2 stops
MCI12:52 amKansas City
$816
United Airlines
Oct 12
MCI7:55 pmKansas City
31h 25m
2 stops
LIS9:20 amLisbon Humberto Delgado
Oct 21
LIS12:20 pmLisbon Humberto Delgado
32h 19m
1 stop
MCI2:39 pmKansas City
$817
United Airlines
May 11
STL1:05 pmLambert-St Louis
14h 15m
1 stop
LIS9:20 amLisbon Humberto Delgado
May 22
LIS7:25 amLisbon Humberto Delgado
22h 54m
2 stops
STL12:19 amLambert-St Louis
$861

momondo Fare Finder

 
Customize your flight search to find flights from Missouri to Portugal 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 21, 2026.
Use the filters below to find and compare flights from Missouri to Portugal that are best for you.

Fly from

Fly to

Route

Depart

Return

Price

Cheapest round-trip

St. LouisLisbon

STL - LIS

STLLIS

Lambert-St Louis

Sun 4/26

11:42 am-8:50 am

2 stops15h 08m

Lisbon Humberto Delgado

Tue 5/12

5:00 am-4:10 pm

2 stops17h 10m

$810

St. LouisLisbon

STL - LIS

STLLIS

Lambert-St Louis

Sun 4/26

9:40 pm-11:05 pm

1 stop19h 25m

Lisbon Humberto Delgado

Tue 5/12

8:25 am-7:33 pm

2 stops17h 08m

$811

Kansas CityLisbon

MCI - LIS

MCILIS

Kansas City

Mon 10/12

7:55 pm-9:20 am

2 stops31h 25m

Lisbon Humberto Delgado

Wed 10/21

12:20 pm-12:52 am

2 stops18h 32m

$816

Kansas CityLisbon

MCI - LIS

MCILIS

Kansas City

Mon 10/12

7:55 pm-9:20 am

2 stops31h 25m

Lisbon Humberto Delgado

Wed 10/21

12:20 pm-2:39 pm

1 stop32h 19m

$817

St. LouisLisbon

STL - LIS

STLLIS

Lambert-St Louis

Sun 4/26

9:40 pm-11:05 pm

1 stop19h 25m

Lisbon Humberto Delgado

Tue 5/12

7:10 am-7:30 pm

1 stop18h 20m

$828
Quickest round-trip

St. LouisPorto

STL - OPO

STLOPO

Lambert-St Louis

Sun 10/4

4:13 pm-10:25 am

1 stop12h 12m

Porto

Wed 10/21

5:00 am-5:06 pm

2 stops18h 06m

$842

St. LouisPorto

STL - OPO

STLOPO

Lambert-St Louis

Sun 10/4

11:51 am-10:25 am

2 stops16h 34m

Porto

Wed 10/21

5:00 am-5:06 pm

2 stops18h 06m

$846

St. LouisPorto

STL - OPO

STLOPO

Lambert-St Louis

Sun 10/4

4:13 pm-10:25 am

1 stop12h 12m

Porto

Wed 10/21

12:40 pm-5:06 pm

1 stop34h 26m

$856

St. LouisLisbon

STL - LIS

STLLIS

Lambert-St Louis

Tue 5/12

12:59 pm-9:05 am

1 stop14h 06m

Lisbon Humberto Delgado

Tue 5/19

7:10 am-7:30 pm

1 stop18h 20m

$878

St. LouisPorto

STL - OPO

STLOPO

Lambert-St Louis

Sun 10/4

4:13 pm-10:25 am

1 stop12h 12m

Porto

Wed 10/21

12:40 pm-5:06 pm

1 stop34h 26m

$942

Flights are sorted by cheapest round-trip flights first.

Showing 1-10 of 20 resultsSorted by cheapest first
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See travel insights to Portugal from

How to get the cheapest flight ticket from Missouri 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 Missouri is in April. Flight prices, which tend to average around $589, are often lower during this time because this is during the off-season. If you aren’t able to travel during the month of April, then book flights to Portugal from Missouri during January instead. Flights to Portugal in January, while not as cheap as those in April, still average around $617.

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

You are more likely to see cheaper flights to Portugal from Missouri when booking week ahead of your departure date. In general, you can expect to find flights to Portugal 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 Portugal from Missouri for as low as $719 on momondo.

Can stopping save me money on Missouri to Portugal flights?

You could potentially save up to 19% on your flight if you consider stops on a Missouri to Portugal flight.

Cheap Missouri to Portugal flight deals and tips

Find info about flight duration, direct flights, and airports for your flight from Missouri to Portugal

Fastest flight time

10h 53m

Direct flights

None
The fastest flight from Missouri to Portugal takes 10h 53m
There are no direct flights from Missouri to Portugal. There are no popular flight routes from Missouri to Portugal.
Search flight deals

Frequently asked questions about flying from Missouri to Portugal

  • When did momondo last update prices for flights from Missouri to Portugal?

    Prices for flights from Missouri to Portugal were last updated today.

  • How many operators does momondo search for flights from Missouri to Portugal?

  • How old do you have to be to fly from Missouri to Portugal?

    The minimum age for a child to fly alone is five, but airlines offering an unaccompanied minor (UNMR) service may have their age restrictions, such as regulations concerning flight duration, timing, and layovers. It is recommended that you verify with the airline you are booking with for travel from Missouri to Portugal.

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

    The travel and health documents required for your trip to Portugal can vary based on your itinerary and personal situation. As a rule, consider having multiple documents such as a national ID card or driver’s license, and a passport valid for six-months after you plan to arrive at Portugal. We always recommend checking with your airline or a trusted third party such as IATA to get advice.

Best airlines flying from Missouri to Portugal

Compare and see reviews for airlines that fly from Missouri to Portugal with momondo
Airline
Rating
Free Cancellation
Price
LufthansaPriceFrom $493Free CancellationRating
6.8
7,937 reviews
Search Lufthansa flights
American AirlinesPriceFrom $505Free CancellationRating
7.1
11,646 reviews
Search American Airlines flights
British AirwaysPriceFrom $508Free CancellationRating
6.7
7,901 reviews
Search British Airways flights
IberiaPriceFrom $525Free CancellationRating
7.0
3,186 reviews
Search Iberia flights
United AirlinesPriceFrom $533Free CancellationRating
7.4
9,613 reviews
Search United Airlines flights
Virgin AtlanticPriceFrom $553Free CancellationRating
7.5
687 reviews
Search Virgin Atlantic flights
DeltaPriceFrom $558Free CancellationRating
7.9
8,434 reviews
Search Delta flights
KLMPriceFrom $578Free CancellationRating
7.8
1,501 reviews
Search KLM flights
Air CanadaPriceFrom $675Free CancellationRating
7.1
10,949 reviews
Search Air Canada flights

Why use momondo?

Why should I use momondo to find a flight deal from Missouri to Portugal?

Finding the right flight to Portugal from Missouri is quick and easy when you have a range of options in front of you, from reputable agents and recognisable airlines. Options that can then be filtered down to find the best fit. That is what momondo does. We make finding flights to Portugal quick and easy, saving you time and money.

Can I find flights from Missouri to Portugal with flexible booking policies on momondo?

All flight searches from Missouri to Portugal on momondo can be filtered to show those which offer flexible booking policies.

How can momondo help me find flights from Missouri to Portugal?

momondo provides multiple filters to help you find the best flight to Portugal from Missouri. Filter by price, airline, airports, cabin, aircraft, payment method, number of stops and more.

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

If you are not ready to book a flight from Missouri 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.

An easier way to manage your Portugal trip

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Find better results for your trip to Portugal

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Popular flights according to clicks in the last 7 days on momondo
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