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$459+ Cheap flights from Detroit (DTT) 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 8/3. Fares are subject to change and may not be available on all flights or dates of travel.
DTT — LHR
Jul 9 — Jul 161
Thu 7/9
Thu 7/16
1 adult, Economy
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Cheap flight deals from Detroit to Portsmouth

Cheapest flights from Detroit to Portsmouth
Explore the most affordable flight options available from Detroit to Portsmouth. Find the lowest fares from popular airlines and budget airlines, with prices last updated on June 9, 2026.

This KLM deal was found by Cheapflights users on 6/6. 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.
Fri 8/1410:50 pm
DTW
-
SOU
1 stop28h 55m
KLM
Tue 8/259:15 am
SOU
-
DTW
1 stop33h 15m
KLM
Deal found 6/6$1,137
This Delta deal was found by Cheapflights users on 6/7. 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 7/126:32 pm
DTW
-
SOU
1 stop18h 03m
Delta
Tue 7/216:05 pm
SOU
-
DTW
1 stop24h 25m
Delta
Deal found 6/7$1,192
This Delta deal was found by Cheapflights users on 6/7. 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 7/125:20 am
DTW
-
SOU
2 stops22h 25m
Delta
Mon 7/206:05 pm
SOU
-
DTW
1 stop24h 25m
Delta
Deal found 6/7$1,196
This Delta deal was found by Cheapflights users on 6/7. 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 7/124:25 pm
DTW
-
SOU
1 stop11h 20m
Delta
Fri 7/249:15 am
SOU
-
DTW
2 stops15h 35m
Delta
Deal found 6/7$1,203
This Mytrip deal was found by Cheapflights users on 6/5. 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 7/206:10 pm
DTW
-
SOU
2 stops14h 35m
Multiple Airlines
Mon 7/277:55 pm
SOU
-
DTW
2 stops26h 25m
Multiple Airlines
Deal found 6/5$1,206
This KLM deal was found by Cheapflights users on 6/8. 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.
Thu 7/2310:45 pm
DTW
-
SOU
1 stop13h 50m
KLM
Thu 7/306:05 pm
SOU
-
DTW
1 stop22h 35m
KLM
Deal found 6/8$1,222
This Delta deal was found by Cheapflights users on 6/8. 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 7/2310:05 am
DTW
-
SOU
2 stops17h 40m
Delta
Thu 7/309:15 am
SOU
-
DTW
2 stops19h 06m
Delta
Deal found 6/8$1,237
This Delta deal was found by Cheapflights users on 6/7. 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 7/1910:40 pm
DTW
-
SOU
1 stop13h 55m
Delta
Sat 7/255:30 pm
SOU
-
DTW
1 stop28h 26m
Delta
Deal found 6/7$1,242
This Delta deal was found by Cheapflights users on 6/7. 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 7/1912:35 pm
DTW
-
SOU
2 stops15h 10m
Delta
Sun 7/269:15 am
SOU
-
DTW
1 stop12h 41m
Delta
Deal found 6/7$1,246

Find flight deals from Detroit to Portsmouth

Keep the following information in mind while searching for Detroit to Portsmouth flight deals. Data was last updated June 9, 2026.

Most accurate provider

FlightHub
3 stars

Most trusted provider

FlightHub
3 stars

Round-trip from

$1,137
(KLM)

One-way from

$459
(Kiwi.com)

Popular in

June

Cheapest in

September

Average price

$1,292
Provider with most accurate pricing for Detroit (DTT)-London (LON) flight deals.
Search Deals
Provider most trusted by Cheapflights users for Detroit (DTT)-London (LON) flights.
Search Deals
From Detroit (DTT) to Portsmouth
Search Deals
One-way flight from Detroit (DTT) to Portsmouth
Search Deals
Highest demand for flights based on searches. 5% potential increase in price ($57 potential increase over avg. RT price).
Search Deals
Cheapest flight prices on average. 2% potential price decrease ($25 potential savings vs. average RT price).
Search Deals
Average for round-trip flights in June 2026
Search Deals

Cheapflights Fare Finder

 
Customize your flight search to find flights from Detroit 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 June 9, 2026.
Use the filters below to find and compare flights from Detroit to Portsmouth that are best for you.

Fly from

Fly to

Route

Depart

Return

Price

Cheapest round-trip

DetroitSouthampton

DTW - SOU

DTWSOU

Detroit Metropolitan Wayne County

Fri 8/14

12:30 pm-8:45 am

2 stops15h 15m

Southampton Eastleigh

Tue 8/25

9:15 am-11:35 am

1 stop31h 20m

$1,141

DetroitSouthampton

DTW - SOU

DTWSOU

Detroit Metropolitan Wayne County

Tue 7/14

10:35 pm-8:45 am

1 stop29h 10m

Southampton Eastleigh

Mon 7/20

6:05 pm-1:30 pm

1 stop24h 25m

$1,192

DetroitSouthampton

DTW - SOU

DTWSOU

Detroit Metropolitan Wayne County

Wed 7/15

6:32 pm-5:35 pm

1 stop18h 03m

Southampton Eastleigh

Mon 7/20

6:05 pm-1:30 pm

1 stop24h 25m

$1,192

DetroitSouthampton

DTW - SOU

DTWSOU

Detroit Metropolitan Wayne County

Sun 7/12

12:35 pm-8:45 am

2 stops15h 10m

Southampton Eastleigh

Tue 7/21

6:05 pm-1:30 pm

1 stop24h 25m

$1,196

DetroitSouthampton

DTW - SOU

DTWSOU

Detroit Metropolitan Wayne County

Wed 7/15

8:50 am-8:45 am

2 stops18h 55m

Southampton Eastleigh

Tue 7/21

6:05 pm-11:40 am

1 stop22h 35m

$1,196

DetroitSouthampton

DTW - SOU

DTWSOU

Detroit Metropolitan Wayne County

Mon 7/13

7:05 am-8:45 am

2 stops20h 40m

Southampton Eastleigh

Thu 7/23

6:05 pm-1:30 pm

1 stop24h 25m

$1,196

DetroitSouthampton

DTW - SOU

DTWSOU

Detroit Metropolitan Wayne County

Mon 7/20

6:10 pm-1:45 pm

2 stops14h 35m

Southampton Eastleigh

Mon 7/27

7:55 pm-9:40 pm

3 stops30h 45m

$1,232
Quickest round-trip

DetroitSouthampton

DTW - SOU

DTWSOU

Detroit Metropolitan Wayne County

Fri 7/3

10:35 pm-5:00 pm

1 stop13h 25m

Southampton Eastleigh

Fri 7/10

9:15 am-11:21 pm

2 stops19h 06m

$1,262

DetroitSouthampton

DTW - SOU

DTWSOU

Detroit Metropolitan Wayne County

Mon 7/20

4:40 pm-5:35 pm

1 stop19h 55m

Southampton Eastleigh

Mon 7/27

9:15 am-1:30 pm

1 stop33h 15m

$1,266

DetroitSouthampton

DTW - SOU

DTWSOU

Detroit Metropolitan Wayne County

Thu 7/9

4:25 pm-5:35 pm

1 stop20h 10m

Southampton Eastleigh

Sat 7/18

5:30 pm-11:53 am

1 stop23h 23m

$1,322

Flights are sorted by cheapest round-trip flights first.

Deals found on 6/4

Showing 1-10 of 12 resultsSorted by cheapest first
1
2

Best time to book a flight from Detroit to Portsmouth

Have a flexible travel schedule? Discover the best time to fly to Portsmouth from Detroit 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 Detroit to Portsmouth

What is the cheapest time of day to fly from DTT to P0R?

Find hourly flight availability from Detroit 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 June 9, 2026.

Regardless of the time of day you decide to fly, the ticket price will remain around the same. Book flights from Detroit to Portsmouth as you normally would.

Weekly flight availability from Detroit to Portsmouth

Explore weekly flight availability from Detroit to Portsmouth. Discover flights operating on different days of the week, giving you the flexibility to choose a travel day that best fits your plans. Compare info to find the most convenient option for your journey. Data last updated June 9, 2026.

The most flights from DTT to P0R are scheduled on a Monday (5 on average). You will have fewer flight options on Monday, which is when the least amount of flights are scheduled (5 on average).

Related info for your journey

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

  • What airport do you fly from for flights from Detroit to Portsmouth?

    Located just 0.6 mi from the city center, Detroit All airports is the airport most travelers will use when flying to Portsmouth from Detroit. Booking flights from All airports (DTT) to Portsmouth should be relatively easy as there are 0 daily outbound flights to Portsmouth from 10 different airlines.

  • How long is the flight from Detroit to Portsmouth?

    Departing from Detroit to Portsmouth will take you 15h 15m. There are 3733 mi between Detroit and Portsmouth. This flight may include one or multiple stops.

  • What are the most reliable airlines from Detroit to Portsmouth?

    The top 3 most reliable airlines when flying from Detroit to Portsmouth are KLM (90%), Air France (90%) and Scandinavian Airlines (90%).

  • What are the cheapest flights from Detroit to Portsmouth?

    While on average a flight from Detroit to Portsmouth is generally $2,570, our data shows the cheapest flight currently is $444. When looking at the most popular route, (Detroit Metropolitan Wayne County - Southampton Eastleigh), you can expect to pay $1,137 for that flight.

  • Can I find deals for flights from Detroit to Portsmouth that include hotel bookings?

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

  • How can I find direct flights from Detroit to Portsmouth?

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

  • Can I find deals for business class flights from Detroit to Portsmouth?

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

See more FAQs

Browse thousands of different options on Cheapflights for your next trip

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Top 10 airlines flying from Detroit to Portsmouth

Discover the top 10 airlines that operate flights from Detroit 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 June 9, 2026.
AirlineCheapestAverageFlexibilityOn-time
JetBlueCheapest$51Average$759FlexibilityNo cancel feeOn-time62%
IcelandairCheapest$395Average$692FlexibilityNo cancel feeOn-time76%
Scandinavian AirlinesCheapest$555Average$700FlexibilityNo cancel feeOn-time77%
Turkish AirlinesCheapest$581Average$810FlexibilityNo cancel feeOn-time77%
British AirwaysCheapest$682Average$1,133FlexibilityNo cancel feeOn-time70%
DeltaCheapest$825Average$1,256FlexibilityNo cancel feeOn-timeN/A
Air FranceCheapest$826Average$1,165FlexibilityNo cancel feeOn-time77%
Virgin AtlanticCheapest$914Average$1,283FlexibilityNo cancel feeOn-time72%
United AirlinesCheapest$934Average$1,227FlexibilityNo cancel feeOn-time69%
KLMCheapest$964Average$1,316FlexibilityNo cancel feeOn-time75%

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