BWI - OPO

$319 Find Cheap Flights from Baltimore to Porto

This is the cheapest one-way flight price found by a KAYAK user in the last 72 hours by searching for a flight from Baltimore to Porto departing on 8/5. 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.
1 adult
1 adult, Economy, 0 bags

KAYAK searches hundreds of travel sites at once for deals on flights to Porto

 
These are the airlines KAYAK users have selected most often from within our search results in flight searches from Baltimore to Porto, as well as popular online travel agencies
These are the airlines KAYAK users have selected most often from within our search results in flight searches from Baltimore to Porto, as well as popular online travel agencies
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Everything you should know

Cheapest round-trip
$754
Multiple Airlines
Mon 8/17Wed 8/26
BWI - OPO • 3 stops
Cheapest one-way
$319
Multiple Airlines
Wed 8/5
BWI - OPO • 2 stops
Top airlines
British Airways
Cheapest • from $774 (round-trip)
Delta
Best reviews • 7.9 score
Airline reviews
Airline reviews
+1
+1
Airline reviews
Airline reviews
+1
Nonstop flights
Not available
There are currently no direct flights between Baltimore and Porto. You'll need at least 1 connection.
Insights
Insights
Insights
Insights
Top layover airports
Newark (EWR)
Cheapest • Avg $992 (round-trip)
Newark (EWR)
Shortest trip • 10h 45m (one-way)
Insights
Insights
Insights
Insights
When to travel
January
Cheapest • 100% price drop
June
Most popular
Good to know
Good to know
+1
+1
Good to know
Good to know
+1
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KAYAK searches 100s of sites at once to find you the best travel deals.
We hope you love your trip to Porto!
Flight Deals
Booking Insights
Flight Deals

Cheap Flights from Baltimore to Porto (BWI-OPO)

 
Here are some of the best deals found on KAYAK recently from the most popular airlines for round-trip flights from Baltimore to Porto that are departing in the next months. While these flights were available on KAYAK in the last 72 hours, prices and availability are subject to change and deals may expire.
Discover the best prices for you by selecting your travel dates on KAYAK.

Recent round-trip flight deals from Baltimore to Porto

Mon, Aug 17 - Wed, Aug 26
Multiple Airlines Logo
11:20 pm - 8:00 am
BWI
-
OPO
27h 40m
3 stops
Multiple Airlines Logo
10:45 am - 10:15 pm
OPO
-
BWI
16h 30m
2 stops
$754Multiple Airlines
Wed, Nov 4 - Wed, Nov 18
British Airways Logo
8:35 pm - 5:50 pm
BWI
-
OPO
16h 15m
1 stop
British Airways Logo
8:40 pm - 7:30 pm
OPO
-
BWI
27h 50m
2 stops
$774British Airways
Wed, Nov 4 - Wed, Nov 18
British Airways Logo
8:21 pm - 5:50 pm
BWI
-
OPO
16h 29m
2 stops
British Airways Logo
8:40 pm - 7:30 pm
OPO
-
BWI
27h 50m
2 stops
$780British Airways
Wed, Nov 25 - Mon, Dec 7
British Airways Logo
8:35 pm - 5:50 pm
BWI
-
OPO
16h 15m
1 stop
British Airways Logo
5:30 pm - 6:45 pm
OPO
-
BWI
30h 15m
1 stop
$790British Airways
Fri, Oct 2 - Sun, Oct 11
Multiple Airlines Logo
8:30 pm - 11:25 pm
BWI
-
OPO
21h 55m
2 stops
Multiple Airlines Logo
10:00 pm - 7:25 pm
OPO
-
BWI
26h 25m
3 stops
$797Multiple Airlines
Mon, Aug 17 - Wed, Aug 26
Multiple Airlines Logo
11:20 pm - 12:40 am
BWI
-
OPO
20h 20m
3 stops
Multiple Airlines Logo
5:05 am - 10:15 pm
OPO
-
BWI
22h 10m
3 stops
$818Multiple Airlines
Mon, Oct 19 - Tue, Oct 27
Multiple Airlines Logo
10:50 am - 7:40 am
BWI
-
OPO
15h 50m
2 stops
Multiple Airlines Logo
8:40 pm - 9:40 pm
OPO
-
BWI
29h 00m
2 stops
$821Multiple Airlines
Mon, Aug 24 - Sun, Aug 30
Multiple Airlines Logo
8:30 pm - 10:00 am
BWI
-
OPO
32h 30m
3 stops
Multiple Airlines Logo
10:00 pm - 7:25 pm
OPO
-
BWI
26h 25m
3 stops
$826Multiple Airlines
Tue, Sep 22 - Tue, Sep 29
British Airways Logo
7:25 pm - 7:30 pm
BWI
-
OPO
19h 05m
1 stop
British Airways Logo
8:55 pm - 5:15 pm
OPO
-
BWI
25h 20m
1 stop
$830British Airways
Sun, Oct 11 - Wed, Nov 18
Delta Logo
5:33 pm - 3:30 pm
BWI
-
OPO
16h 57m
2 stops
Delta Logo
5:00 am - 4:50 pm
OPO
-
BWI
16h 50m
2 stops
$837Delta
Booking Insights

KAYAK's insights & trends for Baltimore to Porto flights

Get data-powered insights and trends into flights from Baltimore to Porto to help you find the cheapest flights, the best time to fly and much more.

How much is a round-trip flight from Baltimore to Porto?

This analysis is based on the cheapest round-trip price found on KAYAK in the last 12 months by searching for a flight from Baltimore to Porto departing in August.

What is the cheapest month to fly from Baltimore to Porto?

To calculate monthly average prices, KAYAK takes all prices for each month over the last year for round-trip flights from Baltimore to Porto, removes the top 0.1% to account for outliers, and then takes the median of all values for each month.

The cheapest month for flights from Baltimore to Porto is January, where tickets cost $0 (return) on average. On the other hand, the most expensive months are April and July, where the average cost of round-trip tickets is $4,242 and $923 respectively.

Find deals

Good to know

Low seasonAugust
Cheapest flight$319
Best time to beat the crowds with an average 52% drop in price.
Most popular time to fly and prices are also 36% lower on average.
Flight from Baltimore to Porto

When to book flights from Baltimore to Porto

Are your dates flexible? Find out the best times to travel from Baltimore to Porto based on our flight data from the last year. Discover the cheapest month and even day to fly.
Estimated round-trip price
KAYAK looks at all historical flight data for each date to provide a predicted price for one-way trips or round-trips with a duration up to 40 days. While we try to provide actual minimum prices for each date, some prices are predictions and actual prices may differ.

FAQs for booking flights from Baltimore to Porto

  • What is the cheapest flight from Baltimore to Porto?

    In the last 5 days, the lowest price for a flight from Baltimore to Porto was $319 for a one-way ticket and $754 for a round-trip.

  • Do I need a passport to fly between Baltimore and Porto?

    A passport is required to fly from Baltimore to Porto.

  • Which airports will I be using when flying from Baltimore to Porto?

    When flying out of Baltimore you will be using Baltimore/Washington. You will be landing at Porto, also known as Porto.

  • Which aircraft models fly most regularly from Baltimore to Porto?

    We unfortunately don’t have that data for this specific route.

  • Which airline alliances offer flights from Baltimore to Porto?

    SkyTeam is the only airline alliance operating flights between Baltimore and Porto.

  • How does KAYAK find such low prices on flights from Baltimore to Porto?

    KAYAK is a travel search engine. That means we look across the web to find the best prices we can find for our users. With over 2 billion flight queries processed yearly, we are able to display a variety of prices and options on flights from Baltimore to Porto.

  • How does KAYAK's flight Price Forecast tool help me choose the right time to buy my flight ticket from Baltimore to Porto?

    KAYAK’s flight Price Forecast tool uses historical data to determine whether the price for a flight to Porto from Baltimore is likely to change within 7 days, so travelers know whether to wait or book now.

  • What is the Hacker Fare option on flights from Baltimore to Porto?

    Hacker Fares allow you to combine one-way tickets in order to save you money over a traditional round-trip ticket. You could then fly to Porto with an airline and back to Baltimore with another airline. Booking your flights between Baltimore and OPO can sometimes prove cheaper using this method.

  • What is KAYAK's "flexible dates" feature and why should I care when looking for a flight from Baltimore to Porto?

    Sometimes travel dates aren't set in stone. If your preferred travel dates have some wiggle room, flexible dates will show you all the options when flying to Porto from Baltimore up to 3 days before/after your preferred dates. You can then pick the flights that suit you best.

Reviews of the top airline flying from Baltimore to Porto

 
See real verified KAYAK customer reviews for airlines flying from Baltimore to Porto. Airline scores are aggregated from all reviews left by passengers on KAYAK after flying with an airline. KAYAK doesn’t show reviews that are older than 5 years. Learn how KAYAK collects reviews.
Need help choosing which airline to fly with from Baltimore to Porto? KAYAK airline reviews give an overall score for each airline based on loads of factors, including comfort, boarding, in-flight entertainment and more, to make your decision easier. See airline scores according to verified KAYAK customer reviews.
7.9
DeltaOverall score based on 8404 reviews
8.1Boarding
7.8Entertainment
7.8Comfort
7.2Food
8.5Crew
Airline reviews

Gate agent showed up 20 minutes before boarding and was not at all friendly. Had to take this flight due to the one on the day before being cancelled and any later options were already full with long standby lists. Despite having paid for Delta Comfort seats, Delta did not allow me (or anyone) to choose their seat. The agent assigned them for everyone just prior to boarding. Self seat selection was allowed on the original flight. Flight staff was great - very friendly.

2.0 MediocreAnonymous, Jun 2026
RDU - LGA
Read more Delta reviews

Gate agent showed up 20 minutes before boarding and was not at all friendly. Had to take this flight due to the one on the day before being cancelled and any later options were already full with long standby lists. Despite having paid for Delta Comfort seats, Delta did not allow me (or anyone) to choose their seat. The agent assigned them for everyone just prior to boarding. Self seat selection was allowed on the original flight. Flight staff was great - very friendly.

Flight attendants were great. Cheerful, upbeat and friendly. Jet, in particular, was fantastic.

I have Precheck. Flew HPN to DEN and return this past weekend. Delta didn't attach my Precheck number to this trip. So it was waiting in general line especially in Denver. Unavailable.

Original flight was delayed, then cancelled and the gate staff did not expedite rebooking. Also, no instructions were given that a ticket number was needed before being called to facilitate rebooking. This could have been much more organized.

Be on time? When not on time a circling for over an hour offer more than 1 bag of chips to the passengers? It was a 7 hour flight by the time we got done.

Five hour delays every hour, I wish it were all at once

Flight delayed four separate times. I’m now one hour hours late to landing.

worst flight ever from Delta, it got delayed and kept on delaying..

Should never have had to go to Detroit from Orlando back to Tennessee!

Got rerouted from a straight flight from Orlando to Atlanta to Knoxville to a flight from Orlando to Detroit to Knoxville! Seriously!! Flight delay out of Detroit! Long day for what should have been a pretty easy travel day!

Everything you need to know for your flight from Baltimore to Porto

Information on your arrival and departure airports

Baltimore (BWI)
Porto (OPO)