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Portugal

$314+ Cheap flights from Missouri to Portugal

This is the cheapest one-way flight price found by a Cheapflights user in the last 72 hours by searching for a flight departing on 2/24. Fares are subject to change and may not be available on all flights or dates of travel.
STL — LIS
Feb 28 — Mar 71
Sat 2/28
Sat 3/7
1 adult, Economy
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Cheap flight deals from Missouri to Portugal

Cheapest flights from Missouri to Portugal
Explore the most affordable flight options available from Missouri to Portugal. Find the lowest fares from popular airlines and budget airlines, with prices last updated on January 29, 2026.

This United Airlines deal was found by Cheapflights users on 1/27. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 4/199:10 am
STL
-
LIS
2 stops19h 20m
United Airlines
Wed 4/295:05 am
LIS
-
STL
1 stop14h 20m
United Airlines
Deal found 1/27$490
This United Airlines deal was found by Cheapflights users on 1/27. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 3/310:24 am
MCI
-
OPO
2 stops17h 06m
United Airlines
Wed 3/116:00 am
OPO
-
MCI
2 stops19h 41m
United Airlines
Deal found 1/27$492
This oojo deal was found by Cheapflights users on 1/27. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure oojo is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 3/26:13 pm
MCI
-
LIS
2 stops21h 42m
British Airways
Tue 3/1011:05 am
LIS
-
MCI
1 stop16h 23m
British Airways
Deal found 1/27$496
This United Airlines deal was found by Cheapflights users on 1/27. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 2/248:30 am
STL
-
LIS
1 stop19h 45m
United Airlines
Tue 3/35:00 am
LIS
-
STL
2 stops22h 05m
United Airlines
Deal found 1/27$496
This Delta deal was found by Cheapflights users on 1/26. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 4/1412:22 pm
MCI
-
OPO
2 stops21h 08m
Delta
Wed 4/295:00 am
OPO
-
MCI
2 stops21h 47m
Delta
Deal found 1/26$498
This United Airlines deal was found by Cheapflights users on 1/27. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 3/210:24 am
MCI
-
LIS
2 stops17h 51m
United Airlines
Tue 3/105:00 am
LIS
-
MCI
2 stops21h 59m
United Airlines
Deal found 1/27$500
This United Airlines deal was found by Cheapflights users on 1/27. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 4/199:10 am
STL
-
LIS
2 stops19h 20m
United Airlines
Tue 4/285:05 am
LIS
-
STL
2 stops22h 03m
United Airlines
Deal found 1/27$500
This United Airlines deal was found by Cheapflights users on 1/28. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 3/311:25 am
STL
-
LIS
2 stops16h 50m
United Airlines
Tue 3/105:00 am
LIS
-
STL
2 stops21h 07m
United Airlines
Deal found 1/28$501
This Delta deal was found by Cheapflights users on 1/28. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 3/106:35 am
MCI
-
LIS
2 stops21h 25m
Delta
Wed 3/185:00 am
LIS
-
MCI
2 stops16h 55m
Delta
Deal found 1/28$503
This Delta deal was found by Cheapflights users on 1/27. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 4/196:25 am
STL
-
LIS
1 stop19h 35m
Delta
Sat 5/25:35 am
LIS
-
STL
2 stops23h 38m
Delta
Deal found 1/27$504
This oojo deal was found by Cheapflights users on 1/27. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure oojo is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 2/252:00 pm
STL
-
LIS
1 stop12h 55m
British Airways
Wed 3/411:05 am
LIS
-
STL
1 stop17h 59m
British Airways
Deal found 1/27$505
This oojo deal was found by Cheapflights users on 1/27. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure oojo is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 4/256:11 pm
STL
-
LIS
2 stops22h 59m
British Airways
Sat 5/26:55 pm
LIS
-
STL
1 stop30h 35m
British Airways
Deal found 1/27$506

Find flight deals from Missouri to Portugal

Keep the following information in mind while searching for Missouri to Portugal flight deals. Data was last updated January 29, 2026.

Most accurate provider

FlightHub
3 stars

Most trusted provider

FlightHub
3 stars

Round-trip from

$490
(United Airlines)

One-way from

$314
(Kiwi.com)

Popular in

December

Cheapest in

January

Average price

$622
Provider with most accurate pricing for Lambert-St Louis-Lisbon Humberto Delgado flight deals.
Search Deals
Provider most trusted by Cheapflights users for Lambert-St Louis-Lisbon Humberto Delgado flights.
Search Deals
From Missouri to Portugal
Search Deals
One-way flight from Missouri to Portugal
Search Deals
Highest demand for flights based on searches. 20% potential increase in price ($280 potential increase over avg. RT price).
Search Deals
Cheapest flight prices on average. 15% potential price decrease ($146 potential savings vs. average RT price).
Search Deals
Average for round-trip flights in January 2026
Search Deals

Cheapflights 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, Cheapflights users made 2,558,603 searches. Data last updated January 29, 2026.
Use the filters below to find and compare flights from Missouri to Portugal that are best for you.

Fly from

Missouri

Fly to

Portugal

Route

Depart

Return

Price

St. LouisLisbon

STL - LIS

STLLIS

Lambert-St Louis

Sun 4/19

9:10 am-10:30 am

2 stops19h 20m

Lisbon Humberto Delgado

Fri 5/1

5:05 am-1:25 pm

1 stop14h 20m

$490

St. LouisLisbon

STL - LIS

STLLIS

Lambert-St Louis

Sun 4/19

9:10 am-10:30 am

2 stops19h 20m

Lisbon Humberto Delgado

Wed 4/29

5:05 am-1:25 pm

1 stop14h 20m

$490

St. LouisLisbon

STL - LIS

STLLIS

Lambert-St Louis

Tue 4/21

9:10 am-8:20 am

2 stops17h 10m

Lisbon Humberto Delgado

Wed 4/29

5:05 am-1:25 pm

1 stop14h 20m

$490

Kansas CityPorto

MCI - OPO

MCIOPO

Kansas City

Tue 3/3

10:24 am-9:30 am

2 stops17h 06m

Porto

Wed 3/11

6:00 am-8:41 pm

2 stops19h 41m

$492

Kansas CityLisbon

MCI - LIS

MCILIS

Kansas City

Mon 3/2

6:13 pm-9:55 pm

2 stops21h 42m

Lisbon Humberto Delgado

Tue 3/10

11:05 am-10:28 pm

1 stop16h 23m

$496

St. LouisLisbon

STL - LIS

STLLIS

Lambert-St Louis

Wed 4/22

6:00 am-8:20 am

2 stops20h 20m

Lisbon Humberto Delgado

Wed 4/29

5:05 am-1:25 pm

1 stop14h 20m

$496

St. LouisLisbon

STL - LIS

STLLIS

Lambert-St Louis

Wed 3/4

9:55 am-10:15 am

2 stops18h 20m

Lisbon Humberto Delgado

Sun 3/8

5:00 am-1:55 pm

1 stop14h 55m

$496

Kansas CityPorto

MCI - OPO

MCIOPO

Kansas City

Tue 4/14

12:22 pm-3:30 pm

2 stops21h 08m

Porto

Wed 4/29

5:00 am-8:47 pm

2 stops21h 47m

$498

Kansas CityLisbon

MCI - LIS

MCILIS

Kansas City

Mon 3/2

10:24 am-10:15 am

2 stops17h 51m

Lisbon Humberto Delgado

Tue 3/10

5:00 am-9:59 pm

2 stops21h 59m

$500

St. LouisLisbon

STL - LIS

STLLIS

Lambert-St Louis

Sun 4/19

9:10 am-10:30 am

2 stops19h 20m

Lisbon Humberto Delgado

Tue 4/28

5:05 am-9:08 pm

2 stops22h 03m

$500

Flights are sorted by cheapest round-trip flights first.

Deals found on 1/28

Showing 1-10 of 54 results
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Best time to book a flight from Missouri to Portugal

Have a flexible travel schedule? Discover the best time to fly to Portugal from Missouri with our price prediction graph.
Estimated round-trip price
Rates are based on past data. Find the cheapest month and day to book your flight based on your travel requirements, then search for cheap deals.

Cheapflights Insights

Everything you need to know about your flight from Missouri to Portugal

What is the cheapest month to book a flight from Missouri to Portugal?

Currently, February is the cheapest month in which you can book a flight from Missouri to Portugal (average of $475). Flying from Missouri to Portugal in July is currently the most expensive (average of $891). There are several factors that can impact the price of a flight, so comparing airlines, departure airports and flight times can provide users with more options.

Related info for your journey

Find useful and relevant information for your journey from Missouri to Portugal. Access travel guides, tips, and recommendations to enhance your travel experience. Get information about local attractions, weather, transportation options, and more.

  • How long is the flight from Missouri to Portugal?

    United Airlines, British Airways, and Delta can get you from Missouri to Portugal in just under 19h 20m. Your travel time can differ by up to 2h 22m. Missouri and Portugal are separated by a distance of 4212 mi. Both multi-stop and nonstop flights can be found to your destination and back.

  • What are the cheapest airlines to fly from Missouri to Portugal one-way?

    $352 is the cheapest one-way deal found within the past few days, from United Airlines. You may also be able to find cheap deals on American Airlines and Air Canada, with prices starting from $371 and $384, respectively.

  • Can I find deals for flights from Missouri to Portugal that include hotel bookings?

    Yes. In addition to deals on Missouri to Portugal flights, Cheapflights offers vacation packages that include both flights and hotel.

  • How can I find direct flights from Missouri to Portugal?

    After entering your origin and destination, apply the non-stop filter on the search result page to find direct flights from Missouri to Portugal.

  • Can I find deals for business class flights from Missouri to Portugal?

    Yes. Cheapflights offers flight deals from Missouri to Portugal by cabin class. In addition to browsing deals, you can also filter by cabin class on the search results page after making a search.

  • What is the cheapest month to book a flight from Missouri to Portugal?

    Currently, February is the cheapest month in which you can book a flight from Missouri to Portugal (average of $475). Flying from Missouri to Portugal in July is currently the most expensive (average of $891). There are several factors that can impact the price of a flight, so comparing airlines, departure airports and flight times can provide users with more options.

See more FAQs

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Alternative routes for Missouri to Portugal

See prices for flight routes from nearby airports that may be better suited for you.
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Top 10 airlines flying from Missouri to Portugal

Discover the top 10 airlines that operate flights from Missouri to Portugal. Compare their services, reliability, and customer satisfaction ratings to choose the airline that best suits your travel preferences and needs. Over the last 7 days, Cheapflights users made 2,558,603 searches. Data last updated January 29, 2026.
AirlineCheapestAverageFlexibilityOn-time
DeltaCheapest$492Average$856FlexibilityNo cancel feeOn-timeN/A
American AirlinesCheapest$505Average$1,073FlexibilityNo cancel feeOn-time71%
LufthansaCheapest$520Average$865FlexibilityNo cancel feeOn-time76%
IberiaCheapest$525Average$824FlexibilityNo cancel feeOn-time77%
United AirlinesCheapest$533Average$1,003FlexibilityNo cancel feeOn-time69%
Virgin AtlanticCheapest$553Average$855FlexibilityNo cancel feeOn-time72%
British AirwaysCheapest$571Average$791FlexibilityNo cancel feeOn-time70%
KLMCheapest$578Average$705FlexibilityNo cancel feeOn-time75%
Air FranceCheapest$642Average$793FlexibilityNo cancel feeOn-time77%
Air CanadaCheapest$721Average$1,039FlexibilityNo cancel feeOn-time67%

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