BWI - OPO

$344 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 8/20. 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
$777
Multiple Airlines
dom. 4/19jue. 4/23
BWI - OPO • 2 stops
Cheapest one-way
$344
Multiple Airlines
jue. 8/20
BWI - OPO • 2 stops
Top airlines
Cheapest • from $849 (round-trip)
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
Cheapest • Avg $992 (round-trip)
Shortest trip • 10h 45m (one-way)
Insights
Insights
Insights
Insights
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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

dom., abr. 19 - jue., abr. 23
Multiple Airlines Logo
8:30 pm - 11:59 pm
BWI
-
OPO
22h 29m
2 stops
Multiple Airlines Logo
7:00 am - 10:20 pm
OPO
-
BWI
44h 20m
3 stops
$777Multiple Airlines
dom., sep. 20 - mié., oct. 14
British Airways Logo
9:35 pm - 8:35 pm
BWI
-
OPO
18h 00m
1 stop
British Airways Logo
8:20 pm - 7:40 pm
OPO
-
BWI
28h 20m
1 stop
$849British Airways
mar., may. 5 - mar., may. 12
Iberia Logo
9:30 pm - 7:40 am
BWI
-
OPO
29h 10m
2 stops
Iberia Logo
8:40 pm - 7:40 pm
OPO
-
BWI
28h 00m
2 stops
$853Iberia
mié., ago. 19 - jue., ago. 27
United Airlines Logo
10:40 am - 6:55 am
BWI
-
OPO
15h 15m
2 stops
United Airlines Logo
6:00 am - 9:34 am
OPO
-
BWI
32h 34m
2 stops
$857United Airlines
lun., sep. 21 - lun., oct. 12
British Airways Logo
9:30 pm - 8:05 pm
BWI
-
OPO
17h 35m
1 stop
British Airways Logo
9:25 pm - 5:41 pm
OPO
-
BWI
25h 16m
2 stops
$861British Airways
lun., ago. 17 - mié., ago. 26
Multiple Airlines Logo
6:10 pm - 3:25 pm
BWI
-
OPO
16h 15m
2 stops
Multiple Airlines Logo
5:00 am - 6:09 pm
OPO
-
BWI
18h 09m
2 stops
$867Multiple Airlines
lun., may. 11 - jue., may. 21
Delta Logo
6:59 pm - 3:30 pm
BWI
-
OPO
15h 31m
2 stops
Delta Logo
5:00 am - 7:16 pm
OPO
-
BWI
19h 16m
2 stops
$872Delta
dom., may. 10 - dom., may. 17
Multiple Airlines Logo
8:30 pm - 8:40 pm
BWI
-
OPO
19h 10m
2 stops
Multiple Airlines Logo
5:55 am - 6:43 pm
OPO
-
BWI
41h 48m
3 stops
$875Multiple Airlines
mar., sep. 22 - jue., oct. 15
British Airways Logo
7:25 pm - 9:05 am
BWI
-
OPO
32h 40m
1 stop
British Airways Logo
9:55 am - 7:40 pm
OPO
-
BWI
14h 45m
1 stop
$879British Airways
sáb., ago. 8 - mié., ago. 19
United Airlines Logo
6:45 am - 6:55 am
BWI
-
OPO
19h 10m
2 stops
United Airlines Logo
2:25 pm - 12:43 am
OPO
-
BWI
39h 18m
2 stops
$885United Airlines
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.

Which airlines provide the cheapest flights from Baltimore to Porto?

The cheapest round-trip price for the route for each airline clicked by KAYAK users in the last 72 hours.

In the past 3 days, the cheapest round-trip tickets from Baltimore to Porto were found on British Airways ($849) and Iberia ($853).

Good to know

Cheapest flight$344
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 3 days, the lowest price for a flight from Baltimore to Porto was $344 for a one-way ticket and $777 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 8387 reviews
7.8Entertainment
7.2Food
8.1Boarding
7.9Comfort
8.5Crew
Airline reviews

I am writing to express my dissatisfaction with the poor service and unprofessional staff we encountered when traveling with an infant. Our flight was delayed, and the gate staff failed to manage the boarding process appropriately. Due to incorrect, unavailable, or missing 'pink tag' stroller and car seat check-in procedures at the gate, we were forced to board last. Furthermore, the gate staff was rude and dismissive, causing significant distress to our infant. To make matters worse, one of our checked items—an infant sleeper/lounger—was returned to us broken. Given the unsafe handling of essential equipment and unprofessional treatment, I expect a prompt resolution regarding compensation for the damaged items.

2.0 MediocreAadarsh, Apr 2026
CID - MSP
Read more Delta reviews

I am writing to express my dissatisfaction with the poor service and unprofessional staff we encountered when traveling with an infant. Our flight was delayed, and the gate staff failed to manage the boarding process appropriately. Due to incorrect, unavailable, or missing 'pink tag' stroller and car seat check-in procedures at the gate, we were forced to board last. Furthermore, the gate staff was rude and dismissive, causing significant distress to our infant. To make matters worse, one of our checked items—an infant sleeper/lounger—was returned to us broken. Given the unsafe handling of essential equipment and unprofessional treatment, I expect a prompt resolution regarding compensation for the damaged items.

We departed and landed early which was a nice surprise. The boarding process was slow.

N Everything was perfect from boarding to assistance to baggage in Tampa

Subpar. The seating on the plane is almost unbearable. We are literally touching and/or sitting on each other which is totally unacceptable and shameful. Pilots and crew was very accommodating and friendly.

The boarding was organized and informative but the plane was tight meaning that you were sitting on one another and extremely uncomfortable. It’s disappointing that can’t have common seating comfort on the plane.

Loved the crew! Sucks that we went from 1 hour and 8 minute layover to a 3 hour layover. But weather sucks like that.

I was told that they needed to check my bag at the gate and to pick it up at the gate in Richmond. No big deal. I know they can't control the weather, but we flew around RIC for 45 minutes to avoid the storm and were 25 minutes late leaving as well. Once we landed, we were told to go to baggage claim to pick up our luggage. I went to bathroom, paid for parking, and went to the assigned baggage claim location. United flight people came down with us as well. They got their luggage immediately. Next, South West people came down about 10 minutes later. They got their luggage next. We finally got our luggage around 30 minutes in waiting. Was not a wonderful experience. No reflection on Delta, but the ground crew was lousy at best.

Everything could have benn better. Short fly, no food, no entertainment and no wifi.

Flight delayed. Air broken. Cabin was hot enough to pass out. Delta shuttle’s becoming worse and worse.

my mom urmila patel needed a wheelchair which was not available on the curbside. she needed to walk almost 50 meters inside (at the risk of falling) and then had to wait in line to get a wheelchair (this is not ok). Once obtained she had to seat in it for 30-45 minutes for someone to take her in thru the checkin process (which was fairly smooth and easy). the lady who helped her with her checkin process was very courteous and helpful

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

Information on your arrival and departure airports