Cheap flights from St. Louis (STL) to Porto (OPO) from $420
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 9/2. Fares are subject to change and may not be available on all flights or dates of travel. Click the price to replicate the search for this deal.
Cheap flight deals from St. Louis to Porto
Discover tips and strategies to find the most affordable flight options for your journey from St. Louis (STL) to Porto (OPO). Learn about various techniques such as flexible date searches, comparing prices across and setting up price alerts. Use these methods to find the cheapest flights available for your travel needs. Data last updated May 8, 2024.
Popular in | June |
|---|---|
Cheapest in | February |
Average price | $1,493 |
Round-trip from | $523 |
What is the cheapest day to fly round-trip from St. Louis to Porto?
Users have found that leaving on a Sunday can be a cost-effective option. It’s possible to save up to 68% on your flight compared to booking on days when demand is much higher.
What is the cheapest month to fly from St. Louis to Porto?
Flights from St. Louis to Porto lean towards being more expensive in June. Prices are generally better when you fly from St. Louis to Porto in February, with the cheapest ticket starting at $615.
When is the cheapest time to fly from St. Louis to Porto (STL - OPO)?
Unlike in the afternoon, when flights are generally more expensive, you can save up to 25% on flights from St. Louis to Porto by exploring options for tickets at noon.
Cheap American Airlines flights from St. Louis to Porto
Explore cheap flight options specifically provided by American Airlines for the route between St. Louis and Porto. Find affordable fares and compare prices with other airlines to secure the best deal for your journey. Over the last 7 days, Cheapflights users made 2,752,338 searches. Data last updated May 8, 2024.
Consider these cheap American Airlines flights we've found departing from St. Louis to Porto. It's recommended that users confirm their flight details before booking.
Cheap Delta flights from St. Louis to Porto
Explore cheap flight options specifically provided by Delta for the route between St. Louis and Porto. Find affordable fares and compare prices with other airlines to secure the best deal for your journey. Over the last 7 days, Cheapflights users made 2,752,338 searches. Data last updated May 8, 2024.
Browse through some of the cheapest Delta flights traveling from St. Louis to Porto. Check back soon if you're not seeing flights that suit your needs.
Cheap St. Louis to Porto flights in May & June 2024
Find cheap flight options from St. Louis to Porto specifically for the months of May and June 2024. Explore affordable fares based on user searches. Over the last 7 days, Cheapflights users made 2,752,338 searches. Prices were last updated on May 8, 2024.
Scroll through some of the best deals on flights from St. Louis to Porto in 2024. Check back regularly for other flight deals.
St. Louis to Porto 2024 flight deals
Discover exclusive flight deals for travel between St. Louis and Porto in 2024. Find excellent offers based on user searches. Over the last 7 days, Cheapflights users made 2,752,338 searches. Data last updated May 8, 2024.
Scroll through some of the best deals on flights from St. Louis to Porto in 2024. Check back regularly for other flight deals.
One-way flights to Porto from St. Louis
Search for one-way flight options from St. Louis to Porto. Find affordable one-way fares based on user searches. Compare prices and availability to plan your one-way journey according to your preferred dates and budget. Over the last 7 days, Cheapflights users made 2,752,338 searches. Data last updated May 8, 2024.
Take a look at some of the one-way flights we've detected from St. Louis to Porto. Users in need of a round-trip flight from St. Louis to Porto instead should update the search form at the top of page.
Find flights from St. Louis to Porto within your budget
Customize your flight search to find flights from St. Louis to Porto 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 2,752,338 searches. Data last updated May 8, 2024.
Fly from
Fly to
Budget
$886 - $1,370
Route
Depart
Return
Price
Lambert-St LouisPorto
STL - OPO
STLOPO
Lambert-St Louis
Sun 9/8
2 stops18h 55m
Porto
Fri 9/20
2 stops26h 40m
Lambert-St LouisPorto
STL - OPO
STLOPO
Lambert-St Louis
Tue 9/10
2 stops19h 25m
Porto
Fri 9/20
2 stops17h 24m
Lambert-St LouisPorto
STL - OPO
STLOPO
Lambert-St Louis
Mon 9/9
2 stops21h 00m
Porto
Fri 9/20
2 stops17h 24m
Lambert-St LouisPorto
STL - OPO
STLOPO
Lambert-St Louis
Mon 9/9
2 stops33h 15m
Porto
Sun 9/22
2 stops26h 39m
Lambert-St LouisPorto
STL - OPO
STLOPO
Lambert-St Louis
Fri 9/6
2 stops17h 35m
Porto
Sun 9/22
2 stops26h 39m
Lambert-St LouisPorto
STL - OPO
STLOPO
Lambert-St Louis
Sat 9/7
2 stops20h 25m
Porto
Sat 9/21
2 stops28h 20m
Lambert-St LouisPorto
STL - OPO
STLOPO
Lambert-St Louis
Sun 9/8
1 stop13h 55m
Porto
Fri 9/20
1 stop13h 30m
Lambert-St LouisPorto
STL - OPO
STLOPO
Lambert-St Louis
Mon 5/27
1 stop10h 20m
Porto
Sun 6/2
2 stops38h 14m
Lambert-St LouisPorto
STL - OPO
STLOPO
Lambert-St Louis
Mon 5/27
1 stop31h 30m
Porto
Sun 6/2
2 stops32h 59m
When is the cheapest time to fly from St. Louis to Porto?
Use this chart to determine the cheapest time to fly round-trip from St. Louis to Porto. Price data was last updated on May 5, 2024.
Average price of flights to Porto by month
Plan your trip from St. Louis to Porto by taking into account the cheapest months to travel. The average price of a one-way flight from St. Louis to Porto is currently $881 while a round-trip flight costs $1,030. Price data was last updated on May 5, 2024.
Currently, January is the cheapest month in which you can book a flight from St. Louis to Porto (average of $523). Flying from St. Louis to Porto in June is currently the most expensive (average of $1,016). 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.
January
$523
February
$581
March
$599
April
$742
May
$879
June
$1,016
July
$983
August
$865
September
$766
October
$694
November
$554
December
$645
Temperature and rainfall in Porto by month
Plan your trip to Porto by taking into account the average temperature and rainfall totals by month.
OPO Temperature | 48.2 - 68 °F |
|---|
Reviews of airlines servicing Porto
Get insights into the airlines that provide service to Porto. Read reviews, discover amenities, and learn about the overall travel experience offered by airlines. Use this information to make informed decisions when choosing an airline for your flight to Porto. Reviews last updated May 8, 2024.
Read through reviews of airlines operating flights from St. Louis to Porto, such as American Airlines, Delta and Iberia. Reviews also offer insight into each airline's entertainment options, comfort, food, crew/service, and boarding process.
Boarding
Comfort
Crew
Food
Overall
Entertainment
Reviews
Bad experience with the staff boarding the gate. I couldn’t board with my carry on, personal item and a funny bag. I had to put my passport inside my pockets and put the funny bag inside the personal item. Then after passing the staff pull out everything again.
Boarding
Comfort
Crew
Food
Overall
Entertainment
Reviews
Bad experience with the staff boarding the gate. I couldn’t board with my carry on, personal item and a funny bag. I had to put my passport inside my pockets and put the funny bag inside the personal item. Then after passing the staff pull out everything again.
Boarding
Comfort
Crew
Food
Overall
Entertainment
Reviews
Bad experience with the staff boarding the gate. I couldn’t board with my carry on, personal item and a funny bag. I had to put my passport inside my pockets and put the funny bag inside the personal item. Then after passing the staff pull out everything again.
Boarding
Comfort
Crew
Food
Overall
Entertainment
Reviews
Bad experience with the staff boarding the gate. I couldn’t board with my carry on, personal item and a funny bag. I had to put my passport inside my pockets and put the funny bag inside the personal item. Then after passing the staff pull out everything again.
Boarding
Comfort
Crew
Food
Overall
Entertainment
Reviews
Bad experience with the staff boarding the gate. I couldn’t board with my carry on, personal item and a funny bag. I had to put my passport inside my pockets and put the funny bag inside the personal item. Then after passing the staff pull out everything again.
Boarding
Comfort
Crew
Food
Overall
Entertainment
Reviews
Bad experience with the staff boarding the gate. I couldn’t board with my carry on, personal item and a funny bag. I had to put my passport inside my pockets and put the funny bag inside the personal item. Then after passing the staff pull out everything again.
Related info for your journey
Find useful and relevant information for your journey from St. Louis to Porto. Access travel guides, tips, and recommendations to enhance your travel experience. Get information about local attractions, weather, transportation options, and more.
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Alternative routes for St. Louis to PortoSee prices for flight routes from nearby airports that may be better suited for you.
See prices for flight routes from nearby airports that may be better suited for you.
Top 2 airlines flying from St. Louis to Porto
Discover the top 2 airlines that operate flights from St. Louis to Porto. 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 2,752,338 searches. Data last updated May 8, 2024.
Search flights from St. Louis to Porto by cabin class
Find flights from St. Louis to Porto, based on your preferred cabin class, be it economy, premium economy, business, or first class.
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User searches for flights to these destinations increased 20% or more in the past 90 days compared to other destinations
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How does Cheapflights help users find flights from St. Louis to Porto?
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Why should you use Cheapflights to find cheap flight tickets from St. Louis to Porto?
By finding flights from multiple airlines and providers at completely no cost, Cheapflights helps millions of users like you annually find the best flights to Porto from St. Louis.
Can Cheapflights find flights from St. Louis to Porto with no change fees?
Need flexible booking options for your flight to Porto from St. Louis? Don’t worry, Cheapflights have you covered. Use our search filter to only show flights with no change fees.
Can Cheapflights notify me if prices for flights from St. Louis to Porto become cheaper?
Yes, Cheapflights has a feature called Price Alert, which notifies users when flight prices change. Track prices for your flight to Porto from St. Louis today and book when prices fit your budget.