$393+ Cheap flights from Baltimore (BWI) to Portsmouth, England
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 9/6. Fares are subject to change and may not be available on all flights or dates of travel.
BWI — LHR
Jul 31 — Aug 71
Round-trip
1 adult, Economy
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Find cheap flights from Baltimore to Portsmouth with Cheapflights
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Enter your travel information like dates, passengers, trip type (one-way or round trip), and preferred cabin class then click “Find deals”2. Select your favorite providers
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Best
Last-minute
One-way
Cheapest flights from Baltimore to PortsmouthExplore the most affordable flight options available from Baltimore to Portsmouth. Find the lowest fares from popular airlines and budget airlines, with prices last updated on July 1, 2026.
Explore the most affordable flight options available from Baltimore to Portsmouth. Find the lowest fares from popular airlines and budget airlines, with prices last updated on July 1, 2026.
This Trip.com deal was found by Cheapflights users on 6/29. 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 Trip.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 7/278:30 pm
BWI
- SOU
2 stops18h 00m
Multiple Airlines
Mon 8/39:20 am
SOU
- BWI
2 stops15h 05m
Multiple Airlines
Deal found 6/29![Multiple Airlines logo]()
$1,103
This Delta deal was found by Cheapflights users on 6/27. 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.
Tue 8/116:21 am
BWI
- SOU
2 stops21h 24m
Delta
Tue 8/189:15 am
SOU
- BWI
2 stops17h 14m
Delta
Deal found 6/27![Delta logo]()
$1,185
This lastminute.com deal was found by Cheapflights users on 7/1. 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 lastminute.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 8/155:00 pm
BWI
- SOU
2 stops34h 45m
Virgin Atlantic
Mon 8/319:05 am
SOU
- BWI
2 stops17h 23m
Virgin Atlantic
Deal found 7/1![Virgin Atlantic logo]()
$1,194
This Delta deal was found by Cheapflights users on 6/29. 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.
Wed 8/121:45 pm
BWI
- SOU
2 stops14h 00m
Delta
Wed 8/199:15 am
SOU
- BWI
2 stops16h 58m
Delta
Deal found 6/29![Delta logo]()
$1,204
This Delta deal was found by Cheapflights users on 6/29. 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.
Thu 8/138:18 am
BWI
- SOU
2 stops19h 27m
Delta
Thu 8/209:15 am
SOU
- BWI
2 stops18h 24m
Delta
Deal found 6/29![Delta logo]()
$1,223
This Delta deal was found by Cheapflights users on 6/30. 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.
Sat 8/157:30 am
BWI
- SOU
2 stops20h 15m
Delta
Sat 8/229:15 am
SOU
- BWI
2 stops17h 08m
Delta
Deal found 6/30![Delta logo]()
$1,265
This Delta deal was found by Cheapflights users on 6/29. 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.
Sat 8/2911:03 am
BWI
- SOU
2 stops16h 42m
Delta
Mon 9/79:05 am
SOU
- BWI
2 stops18h 34m
Delta
Deal found 6/29![Delta logo]()
$1,272
This Mytrip deal was found by Cheapflights users on 6/27. 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 Mytrip is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 8/108:30 pm
BWI
- SOU
2 stops15h 20m
Multiple Airlines
Mon 8/179:20 am
SOU
- BWI
2 stops17h 55m
Multiple Airlines
Deal found 6/27![Multiple Airlines logo]()
$1,277
This Delta deal was found by Cheapflights users on 6/29. 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.
Mon 8/1012:30 pm
BWI
- SOU
2 stops15h 15m
Delta
Sun 8/235:30 pm
SOU
- BWI
2 stops29h 17m
Delta
Deal found 6/29![Delta logo]()
$1,317
Best flights from Baltimore to PortsmouthDiscover carefully curated flight deals from Baltimore to Portsmouth that have cost, travel time, and layovers in mind to ensure you get the best travel experience. Data last updated July 1, 2026.
Discover carefully curated flight deals from Baltimore to Portsmouth that have cost, travel time, and layovers in mind to ensure you get the best travel experience. Data last updated July 1, 2026.
This Delta deal was found by Cheapflights users on 6/27. 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.
Tue 8/116:21 am
BWI
- SOU
2 stops21h 24m
Delta
Tue 8/189:15 am
SOU
- BWI
2 stops17h 14m
Delta
Deal found 6/27![Delta logo]()
$1,185
This Mytrip deal was found by Cheapflights users on 6/29. 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 Mytrip is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 7/278:30 pm
BWI
- SOU
2 stops18h 00m
Multiple Airlines
Mon 8/36:05 pm
SOU
- BWI
3 stops30h 20m
Multiple Airlines
Deal found 6/29![Multiple Airlines logo]()
$1,259
This Delta deal was found by Cheapflights users on 6/28. 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.
Wed 8/121:45 pm
BWI
- SOU
2 stops14h 00m
Delta
Wed 8/199:15 am
SOU
- BWI
2 stops16h 58m
Delta
Deal found 6/28![Delta logo]()
$1,204
This Delta deal was found by Cheapflights users on 6/29. 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.
Thu 8/138:18 am
BWI
- SOU
2 stops19h 27m
Delta
Thu 8/209:15 am
SOU
- BWI
2 stops18h 24m
Delta
Deal found 6/29![Delta logo]()
$1,223
This Mytrip deal was found by Cheapflights users on 6/27. 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 Mytrip is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 8/118:30 pm
BWI
- SOU
3 stops31h 10m
Multiple Airlines
Tue 8/185:20 pm
SOU
- BWI
3 stops33h 55m
Multiple Airlines
Deal found 6/27![Multiple Airlines logo]()
$1,402
This Delta deal was found by Cheapflights users on 6/30. 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.
Sat 8/157:30 am
BWI
- SOU
2 stops20h 15m
Delta
Sat 8/229:15 am
SOU
- BWI
2 stops17h 08m
Delta
Deal found 6/30![Delta logo]()
$1,265
This Delta deal was found by Cheapflights users on 6/29. 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.
Sat 8/2911:03 am
BWI
- SOU
2 stops16h 42m
Delta
Mon 9/79:05 am
SOU
- BWI
2 stops18h 34m
Delta
Deal found 6/29![Delta logo]()
$1,272
This Mytrip deal was found by Cheapflights users on 6/29. 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 Mytrip is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 8/138:30 pm
BWI
- SOU
3 stops31h 10m
Multiple Airlines
Thu 8/208:25 am
SOU
- BWI
3 stops16h 00m
Multiple Airlines
Deal found 6/29![Multiple Airlines logo]()
$1,596
This Delta deal was found by Cheapflights users on 6/27. 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.
Wed 7/1511:52 am
BWI
- SOU
2 stops15h 53m
Delta
Wed 7/229:15 am
SOU
- BWI
2 stops18h 14m
Delta
Deal found 6/27![Delta logo]()
$1,390
Last-minute flights from Baltimore to PortsmouthDiscover last-minute flight deals from Baltimore to Portsmouth. Data last updated July 1, 2026 and is based on user searches.
Discover last-minute flight deals from Baltimore to Portsmouth. Data last updated July 1, 2026 and is based on user searches.
This British Airways deal was found by Cheapflights users on 6/27. 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 British Airways is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 7/19:30 pm
BWI
- SOU
2 stops15h 15m
British Airways
Tue 7/148:55 am
SOU
- BWI
2 stops15h 45m
British Airways
Deal found 6/27![British Airways logo]()
$4,724
This oojo deal was found by Cheapflights users on 6/30. 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.
Thu 7/29:30 pm
BWI
- SOU
2 stops38h 20m
Aer Lingus
Sun 7/59:20 am
SOU
- BWI
2 stops39h 20m
Aer Lingus
Deal found 6/30![Aer Lingus logo]()
$2,641
This British Airways deal was found by Cheapflights users on 6/27. 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 British Airways is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 7/69:30 pm
BWI
- SOU
2 stops15h 15m
British Airways
Mon 7/208:55 am
SOU
- BWI
2 stops15h 45m
British Airways
Deal found 6/27![British Airways logo]()
$20,667
This KLM deal was found by Cheapflights users on 6/29. 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 KLM is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 7/1311:35 am
BWI
- SOU
2 stops16h 10m
KLM
Thu 7/169:15 am
SOU
- BWI
2 stops18h 58m
KLM
Deal found 6/29![KLM logo]()
$1,604
This Mytrip deal was found by Cheapflights users on 6/29. 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 Mytrip is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 7/1312:20 pm
BWI
- SOU
3 stops26h 10m
Multiple Airlines
Thu 7/169:20 am
SOU
- BWI
2 stops15h 05m
Multiple Airlines
Deal found 6/29![Multiple Airlines logo]()
$1,662
This Delta deal was found by Cheapflights users on 6/27. 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.
Wed 7/1511:52 am
BWI
- SOU
2 stops15h 53m
Delta
Wed 7/229:15 am
SOU
- BWI
2 stops18h 14m
Delta
Deal found 6/27![Delta logo]()
$1,390
This British Airways deal was found by Cheapflights users on 6/30. 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 British Airways is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 7/169:30 pm
BWI
- SOU
2 stops16h 55m
British Airways
Fri 8/146:45 am
SOU
- BWI
2 stops17h 55m
British Airways
Deal found 6/30![British Airways logo]()
$4,725
This Trip.com deal was found by Cheapflights users on 6/29. 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 Trip.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 7/278:30 pm
BWI
- SOU
2 stops18h 00m
Multiple Airlines
Mon 8/39:20 am
SOU
- BWI
2 stops15h 05m
Multiple Airlines
Deal found 6/29![Multiple Airlines logo]()
$1,103
One-way flights from Baltimore to PortsmouthSearch for one-way flight options from Baltimore to Portsmouth. Find affordable one-way fares based on user searches. Data last updated July 1, 2026.
Search for one-way flight options from Baltimore to Portsmouth. Find affordable one-way fares based on user searches. Data last updated July 1, 2026.
This Kiwi.com deal was found by Cheapflights users on 6/29. 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 9/68:30 pm
BWI
- SOU
3 stops31h 10m
Multiple Airlines
Deal found 6/29![Multiple Airlines logo]()
$393
This KLM deal was found by Cheapflights users on 6/30. 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 KLM is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 9/51:00 pm
BWI
- SOU
2 stops14h 45m
KLM
Deal found 6/30![KLM logo]()
$589
This Delta deal was found by Cheapflights users on 6/29. 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.
Mon 7/138:17 am
BWI
- SOU
2 stops19h 28m
Delta
Deal found 6/29![Delta logo]()
$598
This oojo deal was found by Cheapflights users on 6/30. 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.
Sun 8/239:35 pm
BWI
- SOU
2 stops16h 25m
Aer Lingus
Deal found 6/30![Aer Lingus logo]()
$747
This oojo deal was found by Cheapflights users on 6/29. 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.
Thu 8/139:30 pm
BWI
- SOU
2 stops16h 30m
Aer Lingus
Deal found 6/29![Aer Lingus logo]()
$775
This Ovago deal was found by Cheapflights users on 6/29. 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 Ovago is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 7/131:55 pm
BWI
- SOU
3 stops25h 50m
Multiple Airlines
Deal found 6/29![Multiple Airlines logo]()
$2,582
Find flight deals from Baltimore to Portsmouth
Keep the following information in mind while searching for Baltimore to Portsmouth flight deals. Data was last updated July 1, 2026.
Most accurate provider | FlightHub 3 stars |
|---|---|
Most trusted provider | FlightHub 3 stars |
Round-trip from | $1,103 (Trip.com) |
One-way from | $393 (Kiwi.com) |
Popular in | June |
Cheapest in | January |
Average price | $902 |
Cheapflights Fare Finder
Customize your flight search to find flights from Baltimore to Portsmouth 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 July 1, 2026.
Use the filters below to find and compare flights from Baltimore to Portsmouth that are best for you.
Fly from
Fly to
Route
Depart
Return
Cheapest round-trip
BaltimoreSouthampton
BWI - SOU
BWISOU
Baltimore/Washington
Tue 8/11
6:21 am-8:45 am
2 stops21h 24m
Southampton Eastleigh
Tue 8/18
9:15 am-9:29 pm
2 stops17h 14m
$1,185
Quickest round-trip
BaltimoreSouthampton
BWI - SOU
BWISOU
Baltimore/Washington
Wed 8/12
1:45 pm-8:45 am
2 stops14h 00m
Southampton Eastleigh
Wed 8/19
9:15 am-9:13 pm
2 stops16h 58m
$1,204
BaltimoreSouthampton
BWI - SOU
BWISOU
Baltimore/Washington
Thu 8/13
8:18 am-8:45 am
2 stops19h 27m
Southampton Eastleigh
Thu 8/20
9:15 am-10:39 pm
2 stops18h 24m
$1,223
BaltimoreSouthampton
BWI - SOU
BWISOU
Baltimore/Washington
Mon 7/27
8:30 pm-7:30 pm
2 stops18h 00m
Southampton Eastleigh
Mon 8/3
6:05 pm-7:25 pm
3 stops30h 20m
$1,259
BaltimoreSouthampton
BWI - SOU
BWISOU
Baltimore/Washington
Sat 8/15
7:30 am-8:45 am
2 stops20h 15m
Southampton Eastleigh
Sat 8/22
9:15 am-9:23 pm
2 stops17h 08m
$1,265
BaltimoreSouthampton
BWI - SOU
BWISOU
Baltimore/Washington
Sat 8/29
11:03 am-8:45 am
2 stops16h 42m
Southampton Eastleigh
Mon 9/7
9:05 am-10:39 pm
2 stops18h 34m
$1,272
BaltimoreSouthampton
BWI - SOU
BWISOU
Baltimore/Washington
Wed 7/15
11:52 am-8:45 am
2 stops15h 53m
Southampton Eastleigh
Wed 7/22
9:15 am-10:29 pm
2 stops18h 14m
$1,390
BaltimoreSouthampton
BWI - SOU
BWISOU
Baltimore/Washington
Tue 8/11
8:30 pm-8:40 am
3 stops31h 10m
Southampton Eastleigh
Tue 8/18
5:20 pm-10:15 pm
3 stops33h 55m
$1,402
BaltimoreSouthampton
BWI - SOU
BWISOU
Baltimore/Washington
Thu 8/13
8:30 pm-8:40 am
3 stops31h 10m
Southampton Eastleigh
Thu 8/20
8:25 am-7:25 pm
3 stops16h 00m
$1,596
Cheapest one-way
BaltimoreSouthampton
BWI - SOU
BWISOU
Baltimore/Washington
Sun 9/6
8:30 pm-12:50 pm
2 stops35h 20m
$396
Showing 1-10 of 15 resultsSorted by cheapest first
Best time to book a flight from Baltimore to Portsmouth
Have a flexible travel schedule? Discover the best time to fly to Portsmouth from Baltimore with our price prediction graph.
BWI-SOU
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 Baltimore to Portsmouth
BWI-P0R
BWI-SOU
What is the cheapest time of day to fly from BWI to P0R?
Find hourly flight availability from Baltimore to Portsmouth. Discover flight options and departure times throughout the day, allowing you to choose a departure time that suits your schedule. Data last updated July 1, 2026.
When flying from Baltimore to Portsmouth, the time of day you decide to fly out makes little to no difference towards the overall price you’ll pay on tickets.
Related info for your journey
Find useful and relevant information for your journey from Baltimore to Portsmouth. Access travel guides, tips, and recommendations to enhance your travel experience. Get information about local attractions, weather, transportation options, and more.
Browse thousands of different options on Cheapflights for your next trip
Toggle through the tabs below to find thousands of options on Cheapflights for your next trip.
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Complete your trip
Flights by cabin class
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Popular flights
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Alternative routes for Baltimore to Portsmouth
See prices for flight routes from nearby airports that may be better suited for you.
Complete your trip
Complete your trip to Portsmouth by adding a car rental and/or hotel reservation to your travel itinerary.
Search flights from Baltimore to Portsmouth by cabin class
Find flights from Baltimore to Portsmouth, based on your preferred cabin class, be it economy, premium economy, business, or first class.
Baltimore and Portsmouth flights
Browse other Baltimore and Portsmouth flight options. Last updated on July 1, 2026.
Popular flight searches
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Baltimore to Portsmouth flights
Consider these flights traveling from Baltimore to Portsmouth.
Top 8 airlines flying from Baltimore to Portsmouth
Discover the top 8 airlines that operate flights from Baltimore to Portsmouth. 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 July 1, 2026.
| Airline | Cheapest | Average | Flexibility | On-time |
|---|---|---|---|---|
| Cheapest$462 | Average$840 | FlexibilityNo cancel fee | On-time69% | |
| Cheapest$471 | Average$695 | FlexibilityNo cancel fee | On-time72% | |
| Cheapest$479 | Average$743 | FlexibilityNo cancel fee | On-time76% | |
| Cheapest$589 | Average$871 | FlexibilityNo cancel fee | On-time70% | |
| Cheapest$599 | Average$808 | FlexibilityNo cancel fee | On-time76% | |
| Cheapest$602 | Average$877 | FlexibilityNo cancel fee | On-time71% | |
| Cheapest$609 | Average$867 | FlexibilityNo cancel fee | On-timeN/A | |
| Cheapest$650 | Average$939 | FlexibilityNo cancel fee | On-time77% |