How many flights depart from Frankfurt am Main to Detroit on average per day?

As of September 2026, 6 flights take off from Frankfurt am Main and land in Detroit each day. The most common flight departure time for this route is 11:00AM, with 100% of daily flights taking off at noon.

What is the cheapest airline that flies from Frankfurt am Main to Detroit?

American Airlines, Delta, and KLM are the most popular carriers operating from Frankfurt am Main to Detroit

How many flights depart from Frankfurt am Main to Detroit on average per week?

As of September 2026, 46 flights take off from Frankfurt am Main and land in Detroit each week. The most common flight departure day for this route is Mon, with 15% of weekly flights taking off on this day.

What airlines fly to Detroit?

Delta, Lufthansa and KLM are the top three most popular airlines that fly to Detroit from Frankfurt am Main according to our data. Delta is the first choice among our users, with 38% of people opting to fly with this airline when traveling to Detroit. Keep in mind that there are 5 different airlines that fly to Detroit on a routine basis, so you have a few additional options to choose from.

When did momondo last update prices for flights from Frankfurt am Main to Detroit?

Prices for flights from Frankfurt am Main to Detroit are updated daily.

How many operators does momondo search for flights from Frankfurt am Main to Detroit?

The number of operators available for flights from Frankfurt am Main to Detroit is 5 as of September 2026.

How old do you have to be to fly from Frankfurt am Main to Detroit?

The minimum age for a child to fly alone is five, but airlines offering an unaccompanied minor (UNMR) service may have their age restrictions, such as regulations concerning flight duration, timing, and layovers. It is recommended that you verify with the airline you are booking with for travel from Frankfurt am Main to Detroit.

What documentation or ID do you need to fly to Detroit?

The required travel and health documents for your Detroit trip may vary depending on your itinerary and personal circumstances. As a general rule, you should carry multiple documents, including a national ID card or driver's license and a passport valid for six months after your intended arrival at Detroit. We recommend that you seek guidance from your airline or a reliable third party such as IATA.

$487 Cheap Flights from Frankfurt am Main to Detroit in 2026/27

Discover deals from 900+ travel sites with momondo.

Find the cheapest flights from Frankfurt am Main to Detroit

Round-trip

One-way

Last minute

Direct

Cheap round-trip flights

Enter your travel dates to find the best prices.

9:50 am - 2:17 pmFRA Frankfurt am Main-DTW Detroit Metropolitan Wayne County

9h 27mnonstop

3:59 pm - 8:40 amDTW Detroit Metropolitan Wayne County-FRA Frankfurt am Main

10h 41m1 stop New York John F Kennedy Intl

$712KLM

Mon, Oct 26 - Thu, Nov 19

9:50 am - 2:17 pmFRA Frankfurt am Main-DTW Detroit Metropolitan Wayne County

9h 27mnonstop

3:59 pm - 8:40 amDTW Detroit Metropolitan Wayne County-FRA Frankfurt am Main

10h 41m1 stop New York John F Kennedy Intl

$712KLM

Wed, Oct 28 - Thu, Nov 19

11:00 am - 2:22 pmFRA Frankfurt am Main-DTW Detroit Metropolitan Wayne County

9h 22mnonstop

7:40 pm - 9:50 amDTW Detroit Metropolitan Wayne County-FRA Frankfurt am Main

8h 10mnonstop

$712Delta

Tue, Oct 13 - Tue, Oct 20

9:50 am - 2:17 pmFRA Frankfurt am Main-DTW Detroit Metropolitan Wayne County

9h 27mnonstop

6:35 pm - 8:40 amDTW Detroit Metropolitan Wayne County-FRA Frankfurt am Main

8h 05mnonstop

$712Delta

Sat, Oct 31 - Fri, Jan 15

9:50 am - 2:17 pmFRA Frankfurt am Main-DTW Detroit Metropolitan Wayne County

9h 27mnonstop

6:35 pm - 8:40 amDTW Detroit Metropolitan Wayne County-FRA Frankfurt am Main

8h 05mnonstop

$712Air France

Wed, Oct 28 - Wed, Nov 18

9:50 am - 2:17 pmFRA Frankfurt am Main-DTW Detroit Metropolitan Wayne County

9h 27mnonstop

6:15 pm - 2:20 pmDTW Detroit Metropolitan Wayne County-FRA Frankfurt am Main

14h 05m1 stop Paris Charles de Gaulle

$712Air France

Sat, Oct 31 - Thu, Jan 14

11:00 am - 2:21 pmFRA Frankfurt am Main-DTW Detroit Metropolitan Wayne County

9h 21mnonstop

7:40 pm - 9:50 amDTW Detroit Metropolitan Wayne County-FRA Frankfurt am Main

8h 10mnonstop

$714Virgin Atlantic

Mon, Sep 28 - Sun, Oct 11

11:00 am - 2:22 pmFRA Frankfurt am Main-DTW Detroit Metropolitan Wayne County

9h 22mnonstop

7:40 pm - 9:50 amDTW Detroit Metropolitan Wayne County-FRA Frankfurt am Main

8h 10mnonstop

$715Virgin Atlantic

Tue, Oct 13 - Tue, Oct 20

10:55 am - 2:15 pmFRA Frankfurt am Main-DTW Detroit Metropolitan Wayne County

9h 20mnonstop

4:05 pm - 6:15 amDTW Detroit Metropolitan Wayne County-FRA Frankfurt am Main

8h 10mnonstop

$754Lufthansa

Tue, Nov 3 - Tue, Nov 10

10:55 am - 3:15 pmFRA Frankfurt am Main-DTW Detroit Metropolitan Wayne County

9h 20mnonstop

4:05 pm - 6:15 amDTW Detroit Metropolitan Wayne County-FRA Frankfurt am Main

8h 10mnonstop

$756Lufthansa

Thu, Oct 29 - Thu, Nov 5

Cheap last minute flights

Enter your travel dates to find the best prices.

2:15 pm - 10:20 pmFRA Frankfurt am Main-DTW Detroit Metropolitan Wayne County

14h 05m2 stops Amsterdam Schiphol Boston Logan Intl

12:37 pm - 9:35 amDTW Detroit Metropolitan Wayne County-FRA Frankfurt am Main

14h 58m2 stops Minneapolis St Paul Amsterdam Schiphol

$714KLM

Mon, Sep 21 - Sun, Oct 4

11:00 am - 2:21 pmFRA Frankfurt am Main-DTW Detroit Metropolitan Wayne County

9h 21mnonstop

7:40 pm - 9:50 amDTW Detroit Metropolitan Wayne County-FRA Frankfurt am Main

8h 10mnonstop

$716KLM

Mon, Sep 21 - Sun, Oct 4

11:00 am - 2:21 pmFRA Frankfurt am Main-DTW Detroit Metropolitan Wayne County

9h 21mnonstop

7:40 pm - 9:50 amDTW Detroit Metropolitan Wayne County-FRA Frankfurt am Main

8h 10mnonstop

$716Delta

Mon, Sep 21 - Sun, Oct 4

11:40 am - 11:56 pmFRA Frankfurt am Main-DTW Detroit Metropolitan Wayne County

18h 16m1 stop New York John F Kennedy Intl

8:00 am - 5:45 amDTW Detroit Metropolitan Wayne County-FRA Frankfurt am Main

15h 45m1 stop Boston Logan Intl

$759Multiple Airlines

Fri, Sep 18 - Sat, Sep 26

9:55 am - 9:29 pmFRA Frankfurt am Main-DTW Detroit Metropolitan Wayne County

17h 34m1 stop Montreal Pierre Elliott Trudeau Intl

12:30 pm - 7:25 amDTW Detroit Metropolitan Wayne County-FRA Frankfurt am Main

12h 55m1 stop Chicago O'Hare Intl

$788United Airlines

Mon, Sep 21 - Sun, Oct 4

12:30 pm - 9:54 pmFRA Frankfurt am Main-DTW Detroit Metropolitan Wayne County

15h 24m1 stop Boston Logan Intl

8:00 am - 5:45 amDTW Detroit Metropolitan Wayne County-FRA Frankfurt am Main

15h 45m1 stop Boston Logan Intl

$806Multiple Airlines

Thu, Sep 17 - Thu, Sep 24

12:40 pm - 11:58 pmFRA Frankfurt am Main-DTW Detroit Metropolitan Wayne County

17h 18m1 stop Chicago O'Hare Intl

4:00 pm - 5:45 amDTW Detroit Metropolitan Wayne County-FRA Frankfurt am Main

7h 45mnonstop

$878Lufthansa

Sun, Sep 20 - Sun, Sep 27

12:40 pm - 11:58 pmFRA Frankfurt am Main-DTW Detroit Metropolitan Wayne County

17h 18m1 stop Chicago O'Hare Intl

2:02 pm - 9:55 amDTW Detroit Metropolitan Wayne County-FRA Frankfurt am Main

13h 53m1 stop Chicago O'Hare Intl

$878Lufthansa

Sun, Sep 20 - Sun, Sep 27

11:10 am - 1:55 pmFRA Frankfurt am Main-DTW Detroit Metropolitan Wayne County

8h 45mnonstop

7:30 am - 6:30 amDTW Detroit Metropolitan Wayne County-FRA Frankfurt am Main

17h 00m1 stop Chicago O'Hare Intl

$890United Airlines

Mon, Sep 21 - Sun, Oct 4

12:10 pm - 6:50 pmFRA Frankfurt am Main-DTW Detroit Metropolitan Wayne County

12h 40m1 stop Paris Charles de Gaulle

6:40 pm - 11:25 amDTW Detroit Metropolitan Wayne County-FRA Frankfurt am Main

10h 45m1 stop Paris Charles de Gaulle

$1,023Delta

Fri, Sep 18 - Tue, Sep 22

Cheap direct flights

Enter your travel dates to find the best prices.

9:50 am - 2:17 pmFRA Frankfurt am Main-DTW Detroit Metropolitan Wayne County

9h 27mnonstop

6:35 pm - 8:40 amDTW Detroit Metropolitan Wayne County-FRA Frankfurt am Main

8h 05mnonstop

$712KLM

Fri, Oct 30 - Wed, Nov 18

11:00 am - 2:22 pmFRA Frankfurt am Main-DTW Detroit Metropolitan Wayne County

9h 22mnonstop

7:40 pm - 9:50 amDTW Detroit Metropolitan Wayne County-FRA Frankfurt am Main

8h 10mnonstop

$712Delta

Tue, Oct 13 - Tue, Oct 20

9:50 am - 2:17 pmFRA Frankfurt am Main-DTW Detroit Metropolitan Wayne County

9h 27mnonstop

6:35 pm - 8:40 amDTW Detroit Metropolitan Wayne County-FRA Frankfurt am Main

8h 05mnonstop

$712Air France

Wed, Oct 28 - Wed, Nov 18

9:50 am - 2:17 pmFRA Frankfurt am Main-DTW Detroit Metropolitan Wayne County

9h 27mnonstop

6:35 pm - 8:40 amDTW Detroit Metropolitan Wayne County-FRA Frankfurt am Main

8h 05mnonstop

$712Air France

Mon, Oct 26 - Wed, Nov 18

9:50 am - 1:17 pmFRA Frankfurt am Main-DTW Detroit Metropolitan Wayne County

9h 27mnonstop

6:30 pm - 8:40 amDTW Detroit Metropolitan Wayne County-FRA Frankfurt am Main

8h 10mnonstop

$712Delta

Mon, Nov 30 - Fri, Dec 25

11:00 am - 2:21 pmFRA Frankfurt am Main-DTW Detroit Metropolitan Wayne County

9h 21mnonstop

7:40 pm - 9:50 amDTW Detroit Metropolitan Wayne County-FRA Frankfurt am Main

8h 10mnonstop

$714Virgin Atlantic

Mon, Sep 28 - Sun, Oct 11

11:00 am - 2:22 pmFRA Frankfurt am Main-DTW Detroit Metropolitan Wayne County

9h 22mnonstop

7:40 pm - 9:50 amDTW Detroit Metropolitan Wayne County-FRA Frankfurt am Main

8h 10mnonstop

$715Virgin Atlantic

Thu, Oct 1 - Tue, Oct 13

9:50 am - 2:17 pmFRA Frankfurt am Main-DTW Detroit Metropolitan Wayne County

9h 27mnonstop

6:35 pm - 8:40 amDTW Detroit Metropolitan Wayne County-FRA Frankfurt am Main

8h 05mnonstop

$715KLM

Fri, Oct 30 - Sat, Jan 16

10:55 am - 2:15 pmFRA Frankfurt am Main-DTW Detroit Metropolitan Wayne County

9h 20mnonstop

4:05 pm - 6:15 amDTW Detroit Metropolitan Wayne County-FRA Frankfurt am Main

8h 10mnonstop

$754Lufthansa

Tue, Nov 3 - Tue, Nov 10

10:55 am - 3:15 pmFRA Frankfurt am Main-DTW Detroit Metropolitan Wayne County

9h 20mnonstop

4:05 pm - 6:15 amDTW Detroit Metropolitan Wayne County-FRA Frankfurt am Main

8h 10mnonstop

$756Lufthansa

Thu, Oct 29 - Thu, Nov 5

Save money when you book flights with momondo

Big names and deals

Search 100s of travel sites to compare prices.

Filter for what you want

Free Wi-Fi? Stopover? Instantly customize your results.

Trusted and free

We’re completely free to use - no hidden charges or fees.

Price Alerts

Not ready to book? to track prices.

Search flight deals

American Airlines flights from Frankfurt am Main to Detroit

Our best American Airlines deals on Frankfurt am Main to Detroit flight tickets

American Airlines

Oct 6

FRA9:20 amFrankfurt am Main

18h 47m

1 stop

DTW10:07 pmDetroit Metropolitan Wayne County

Oct 13

DTW4:54 pmDetroit Metropolitan Wayne County

14h 56m

2 stops

FRA1:50 pmFrankfurt am Main

$754

American Airlines

Oct 26

FRA10:50 amFrankfurt am Main

16h 48m

2 stops

DTW10:38 pmDetroit Metropolitan Wayne County

Nov 2

DTW5:55 amDetroit Metropolitan Wayne County

20h 55m

1 stop

FRA8:50 amFrankfurt am Main

$770

American Airlines

Oct 19

FRA9:20 amFrankfurt am Main

30h 10m

2 stops

DTW9:30 amDetroit Metropolitan Wayne County

Nov 13

DTW4:05 pmDetroit Metropolitan Wayne County

17h 35m

2 stops

FRA3:40 pmFrankfurt am Main

$771

Virgin Atlantic flights from Frankfurt am Main to Detroit

Our best Virgin Atlantic deals on Frankfurt am Main to Detroit flight tickets

Virgin Atlantic

Oct 9

FRA11:00 amFrankfurt am Main

9h 22m

DTW2:22 pmDetroit Metropolitan Wayne County

Oct 16

DTW7:40 pmDetroit Metropolitan Wayne County

8h 10m

FRA9:50 amFrankfurt am Main

$716

Virgin Atlantic

Mar 1

FRA10:40 amFrankfurt am Main

16h 42m

1 stop

DTW9:22 pmDetroit Metropolitan Wayne County

Mar 18

DTW12:15 pmDetroit Metropolitan Wayne County

15h 25m

2 stops

FRA8:40 amFrankfurt am Main

$721

Virgin Atlantic

Oct 1

FRA10:40 amFrankfurt am Main

15h 31m

1 stop

DTW8:11 pmDetroit Metropolitan Wayne County

Oct 8

DTW7:00 amDetroit Metropolitan Wayne County

19h 40m

1 stop

FRA8:40 amFrankfurt am Main

$722

momondo Fare Finder

Use the filters below to find and compare flights from Frankfurt am Main to Detroit that are best for you.

Fly from

Fly to

Route

Depart

Return

Price

Cheapest round-trip

Frankfurt am MainDetroit

FRA Frankfurt am Main - DTW Detroit Metropolitan Wayne County

FRADTW

Frankfurt am Main

Mon 10/26

9:50 am-2:17 pm

Nonstop9h 27m

Detroit Metropolitan Wayne County

Thu 11/19

3:59 pm-8:40 am

1 stop10h 41m

$712

Frankfurt am MainDetroit

FRA Frankfurt am Main - DTW Detroit Metropolitan Wayne County

FRADTW

Frankfurt am Main

Wed 10/28

9:50 am-2:17 pm

Nonstop9h 27m

Detroit Metropolitan Wayne County

Thu 11/19

3:59 pm-8:40 am

1 stop10h 41m

$712

Frankfurt am MainDetroit

FRA Frankfurt am Main - DTW Detroit Metropolitan Wayne County

FRADTW

Frankfurt am Main

Tue 10/13

11:00 am-2:22 pm

Nonstop9h 22m

Detroit Metropolitan Wayne County

Tue 10/20

7:40 pm-9:50 am

Nonstop8h 10m

$712

Frankfurt am MainDetroit

FRA Frankfurt am Main - DTW Detroit Metropolitan Wayne County

FRADTW

Frankfurt am Main

Sat 10/31

9:50 am-2:17 pm

Nonstop9h 27m

Detroit Metropolitan Wayne County

Fri 1/15

6:35 pm-8:40 am

Nonstop8h 05m

$712

Frankfurt am MainDetroit

FRA Frankfurt am Main - DTW Detroit Metropolitan Wayne County

FRADTW

Frankfurt am Main

Wed 10/28

9:50 am-2:17 pm

Nonstop9h 27m

Detroit Metropolitan Wayne County

Wed 11/18

6:35 pm-8:40 am

Nonstop8h 05m

$712

Frankfurt am MainDetroit

FRA Frankfurt am Main - DTW Detroit Metropolitan Wayne County

FRADTW

Frankfurt am Main

Sat 10/31

9:50 am-2:17 pm

Nonstop9h 27m

Detroit Metropolitan Wayne County

Thu 1/14

6:15 pm-2:20 pm

1 stop14h 05m

$712

Frankfurt am MainDetroit

FRA Frankfurt am Main - DTW Detroit Metropolitan Wayne County

FRADTW

Frankfurt am Main

Mon 9/28

11:00 am-2:21 pm

Nonstop9h 21m

Detroit Metropolitan Wayne County

Sun 10/11

7:40 pm-9:50 am

Nonstop8h 10m

$714

Frankfurt am MainDetroit

FRA Frankfurt am Main - DTW Detroit Metropolitan Wayne County

FRADTW

Frankfurt am Main

Tue 10/13

11:00 am-2:22 pm

Nonstop9h 22m

Detroit Metropolitan Wayne County

Tue 10/20

7:40 pm-9:50 am

Nonstop8h 10m

$715

Quickest round-trip

Frankfurt am MainDetroit

FRA Frankfurt am Main - DTW Detroit Metropolitan Wayne County

FRADTW

Frankfurt am Main

Tue 11/3

10:55 am-2:15 pm

Nonstop9h 20m

Detroit Metropolitan Wayne County

Tue 11/10

4:05 pm-6:15 am

Nonstop8h 10m

$754

Frankfurt am MainDetroit

FRA Frankfurt am Main - DTW Detroit Metropolitan Wayne County

FRADTW

Frankfurt am Main

Thu 10/29

10:55 am-3:15 pm

Nonstop9h 20m

Detroit Metropolitan Wayne County

Thu 11/5

4:05 pm-6:15 am

Nonstop8h 10m

$756

Flights are sorted by cheapest round-trip flights first.

Showing 1-10 of 20 resultsSorted by cheapest first

How to get the cheapest flight ticket from Frankfurt am Main to Detroit

Look no further. We've gone through all the searches for this route on momondo so you have the important information and insights to find the cheapest flight ticket for your trip

Prices

Airlines

Other information

What is the typical price of a round-trip flight between Frankfurt am Main and Detroit?

Prices are currently low for flights on this route.

Typical prices usually range from $727 to $890.
The lowest price recently found on this route was $713.

What is the cheapest month to fly to Detroit?

The cheapest month to fly to Detroit from Frankfurt am Main is in November. Flight prices, which tend to average around $756, are often lower during this time because this is during the off-season. If you’re not able to fly to Detroit in November, then January is your next best option. Flight prices from Frankfurt am Main to Detroit during January average around $761.

What is the cheapest day to depart on your flight to Detroit?

On average, the least expensive day to fly to Detroit from Frankfurt am Main is on a Wednesday. momondo users have found tickets for Wednesday departures for as low as $752. However, this price may fluctuate depending on the airline, the season, and holidays. When flying out on a Sunday, the most expensive travel day of the week, you can expect to see flight prices from Frankfurt am Main to Detroit for around $952.

What is the cheapest Frankfurt am Main to Detroit flight route?

Fly from Frankfurt am Main to Detroit Metropolitan Wayne County for the best Frankfurt am Main - Detroit flight prices

How far in advance should I book a flight from Frankfurt am Main to Detroit?

You are more likely to see cheaper flights to Detroit from Frankfurt am Main when booking weeks ahead of your departure date. In general, you can expect to find flights to Detroit for around $812 when searching weeks out. However, flight prices might be lower outside of this timeframe. For example, people recently found flights to Detroit from Frankfurt am Main for as low as $663 on momondo.

What cabin class options are available on Frankfurt am Main to Detroit flights?

There are 3 cabin classes available to choose from on Frankfurt am Main to Detroit flights. Cabin price and availability will vary by airline so perform a search above to find the right deals for you.

Cheap Frankfurt am Main to Detroit flight deals and tips

Find info about flight duration, direct flights, and airports for your flight from Frankfurt am Main to Detroit

Best Price Found	$487
Fastest flight time	8h 45m
Direct flights	Every day
Airports in Detroit	1 airport

The best one-way flight to Detroit from Frankfurt am Main in the past 72 hours is $487. The best round-trip flight deal from Frankfurt am Main to Detroit found on momondo in the last 72 hours is $712.

The fastest flight from Frankfurt am Main to Detroit takes 8h 45m

Direct flights go from Frankfurt am Main to Detroit every day.

There is 1 airport in Detroit. From Frankfurt am Main there are direct flights to Detroit Metropolitan Wayne County (DTW).

Search flight deals

Frequently asked questions about flying from Frankfurt am Main to Detroit

How far is Frankfurt am Main to Detroit by plane?
Detroit is 4131.6 mi away from Frankfurt am Main. Typically, this will take 8h 45m by plane in normal conditions.
When did momondo last update prices for flights from Frankfurt am Main to Detroit?
Prices for flights from Frankfurt am Main to Detroit are updated daily.
How many operators does momondo search for flights from Frankfurt am Main to Detroit?
The number of operators available for flights from Frankfurt am Main to Detroit is 5 as of September 2026.
How old do you have to be to fly from Frankfurt am Main to Detroit?
The minimum age for a child to fly alone is five, but airlines offering an unaccompanied minor (UNMR) service may have their age restrictions, such as regulations concerning flight duration, timing, and layovers. It is recommended that you verify with the airline you are booking with for travel from Frankfurt am Main to Detroit.
What documentation or ID do you need to fly to Detroit?
The required travel and health documents for your Detroit trip may vary depending on your itinerary and personal circumstances. As a general rule, you should carry multiple documents, including a national ID card or driver's license and a passport valid for six months after your intended arrival at Detroit. We recommend that you seek guidance from your airline or a reliable third party such as IATA.

Best airlines flying from Frankfurt am Main to Detroit

Compare and see reviews for airlines that fly from Frankfurt am Main to Detroit with momondo

Airline	Rating	Free Cancellation	Price
Virgin Atlantic	PriceFrom $467	Free Cancellation	Rating 7.4 694 reviews	Search Virgin Atlantic flights
Lufthansa	PriceFrom $605	Free Cancellation	Rating 6.8 8,220 reviews	Search Lufthansa flights
United Airlines	PriceFrom $647	Free Cancellation	Rating 7.4 10,208 reviews	Search United Airlines flights
Delta	PriceFrom $675	Free Cancellation	Rating 7.8 8,568 reviews	Search Delta flights
KLM	PriceFrom $698	Free Cancellation	Rating 7.8 1,580 reviews	Search KLM flights

Roseville

Port Huron

Why use momondo?

Why should I use momondo to find a flight deal from Frankfurt am Main to Detroit?

It is quick and easy to find Frankfurt am Main to Detroit flights on momondo. We search and return numerous flight options from various airlines and agents. You can then use our filters to narrow your search until you have found the most convenient flight to Detroit that suits you.

Can I find flights from Frankfurt am Main to Detroit with flexible booking policies on momondo?

Flights from Frankfurt am Main to Detroit with flexible booking policies can be found by using the search form above and then selecting our dedicated flexible booking filter, which will highlight only the flights where this policy is applied.

How can momondo help me find flights from Frankfurt am Main to Detroit?

momondo provides multiple filters to help you find the best flight to Detroit from Frankfurt am Main. Filter by price, airline, airports, cabin, aircraft, payment method, number of stops and more.

I’m not ready to book a flight from Frankfurt am Main to Detroit right now. Can momondo alert me if prices change?

If you are simply researching potential flights to Detroit, momondo offers a useful price alert feature which will track prices for flights to Detroit from Frankfurt am Main and alert you when they change.