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Cheap flights from the United States to Klagenfurt from $250

This is the cheapest one-way flight price found by a momondo user in the last 72 hours by searching for a flight from the United States to Klagenfurt departing on 10/14. Fares may change, and may not be available for all flights or travel dates. Click the price to refresh the search for this deal.
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Find the cheapest flights from the United States to Klagenfurt

Recent round-trip flight deals from the United States to Klagenfurt

Logo
5:30 am - 1:55 pmBOS-KLU
26h 25m2 stops
Logo
5:45 am - 2:05 pmKLU-BOS
14h 20m1 stop
$715
Find Deal
Thu, Dec 4 - Tue, Dec 16
Logo
5:30 am - 1:55 pmBOS-KLU
26h 25m2 stops
Logo
5:45 am - 5:01 pmKLU-BOS
17h 16m2 stops
$726
Find Deal
Thu, Dec 4 - Tue, Dec 16
Air Canada Logo
8:00 am - 1:55 pmMIA-KLU
23h 55m2 stops
Air Canada Logo
5:45 am - 11:59 amKLU-MIA
36h 14m2 stops
$755Air Canada
Find Deal
Thu, Nov 13 - Mon, Nov 17
Logo
6:00 am - 2:55 pmBOS-KLU
26h 55m2 stops
Logo
2:50 pm - 2:25 pmKLU-BOS
52h 35m2 stops
$807
Find Deal
Sat, Oct 25 - Thu, Oct 30
Logo
3:40 pm - 1:55 pmBOS-KLU
16h 15m3 stops
Logo
5:45 am - 10:37 pmKLU-BOS
22h 52m2 stops
$817
Find Deal
Thu, Dec 4 - Tue, Dec 16
Lufthansa Logo
5:15 pm - 1:55 pmDTW-KLU
15h 40m2 stops
Lufthansa Logo
2:40 pm - 1:55 pmKLU-DTW
53h 15m2 stops
$818Lufthansa
Find Deal
Wed, Oct 29 - Sun, Nov 2
Air Canada Logo
8:50 am - 1:55 pmSFO-KLU
20h 05m2 stops
Air Canada Logo
5:45 am - 9:35 amKLU-SFO
36h 50m2 stops
$819Air Canada
Find Deal
Fri, Nov 14 - Tue, Nov 18
Lufthansa Logo
5:15 pm - 1:55 pmDTW-KLU
39h 40m2 stops
Lufthansa Logo
2:40 pm - 1:55 pmKLU-DTW
53h 15m2 stops
$819Lufthansa
Find Deal
Wed, Oct 29 - Sun, Nov 2
Austrian Airlines Logo
5:10 pm - 2:00 pmBOS-KLU
14h 50m1 stop
Austrian Airlines Logo
5:45 am - 1:50 pmKLU-BOS
14h 05m1 stop
$1,073Austrian Airlines
Find Deal
Wed, Oct 8 - Wed, Oct 15
Austrian Airlines Logo
5:10 pm - 2:00 pmBOS-KLU
14h 50m1 stop
Austrian Airlines Logo
5:45 am - 1:50 pmKLU-BOS
14h 05m1 stop
$1,094Austrian Airlines
Find Deal
Wed, Oct 15 - Wed, Oct 22

Air Canada flights from United States to Klagenfurt

Our best Air Canada deals on United States to Klagenfurt flight tickets
Air Canada
Nov 13
MIA8:00 amMiami
23h 55m
2 stops
KLU1:55 pmKlagenfurt
Nov 17
KLU5:45 amKlagenfurt
36h 14m
2 stops
MIA11:59 amMiami
$755
Find similar
Air Canada
Nov 14
SFO8:50 amSan Francisco
20h 05m
2 stops
KLU1:55 pmKlagenfurt
Nov 18
KLU5:45 amKlagenfurt
36h 50m
2 stops
SFO9:35 amSan Francisco
$819
Find similar
Air Canada
Oct 6
BOS6:30 pmBoston Logan Intl
37h 30m
2 stops
KLU2:00 pmKlagenfurt
Oct 15
KLU5:45 amKlagenfurt
33h 45m
2 stops
BOS9:30 amBoston Logan Intl
$1,005
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Lufthansa flights from United States to Klagenfurt

Our best Lufthansa deals on United States to Klagenfurt flight tickets
Lufthansa
Oct 29
DTW5:15 pmDetroit Metropolitan Wayne County
15h 40m
2 stops
KLU1:55 pmKlagenfurt
Nov 2
KLU2:40 pmKlagenfurt
53h 15m
2 stops
DTW1:55 pmDetroit Metropolitan Wayne County
$818
Find similar
Lufthansa
Oct 29
DTW5:15 pmDetroit Metropolitan Wayne County
39h 40m
2 stops
KLU1:55 pmKlagenfurt
Nov 2
KLU2:40 pmKlagenfurt
53h 15m
2 stops
DTW1:55 pmDetroit Metropolitan Wayne County
$819
Find similar
Lufthansa
Oct 25
BOS9:40 pmBoston Logan Intl
20h 45m
2 stops
KLU11:25 pmKlagenfurt
Oct 30
KLU2:50 pmKlagenfurt
52h 35m
2 stops
BOS2:25 pmBoston Logan Intl
$899
Find similar

momondo Fare Finder

 
Customize your flight search to find flights from United States to Klagenfurt 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, momondo users made 832,500 searches. Data last updated September 1, 2025.
Use the filters below to find and compare flights from the United States to Klagenfurt that are best for you.

Fly from

Fly to

Route

Depart

Return

Price

BostonKlagenfurt

BOS - KLU

BOSKLU

Boston Logan Intl

Thu 12/4

5:30 am-1:55 pm

2 stops26h 25m

Klagenfurt

Tue 12/16

5:45 am-2:05 pm

1 stop14h 20m

$715

BostonKlagenfurt

BOS - KLU

BOSKLU

Boston Logan Intl

Thu 12/4

5:30 am-1:55 pm

2 stops26h 25m

Klagenfurt

Tue 12/16

5:45 am-5:01 pm

2 stops17h 16m

$726

MiamiKlagenfurt

MIA - KLU

MIAKLU

Miami

Thu 11/13

8:00 am-1:55 pm

2 stops23h 55m

Klagenfurt

Mon 11/17

5:45 am-11:59 am

2 stops36h 14m

$755

BostonKlagenfurt

BOS - KLU

BOSKLU

Boston Logan Intl

Sat 10/25

6:00 am-2:55 pm

2 stops26h 55m

Klagenfurt

Thu 10/30

2:50 pm-2:25 pm

2 stops52h 35m

$807

BostonKlagenfurt

BOS - KLU

BOSKLU

Boston Logan Intl

Thu 12/4

3:40 pm-1:55 pm

3 stops16h 15m

Klagenfurt

Tue 12/16

5:45 am-10:37 pm

2 stops22h 52m

$817

DetroitKlagenfurt

DTW - KLU

DTWKLU

Detroit Metropolitan Wayne County

Wed 10/29

5:15 pm-1:55 pm

2 stops15h 40m

Klagenfurt

Sun 11/2

2:40 pm-1:55 pm

2 stops53h 15m

$818

San FranciscoKlagenfurt

SFO - KLU

SFOKLU

San Francisco

Fri 11/14

8:50 am-1:55 pm

2 stops20h 05m

Klagenfurt

Tue 11/18

5:45 am-9:35 am

2 stops36h 50m

$819

DetroitKlagenfurt

DTW - KLU

DTWKLU

Detroit Metropolitan Wayne County

Wed 10/29

5:15 pm-1:55 pm

2 stops39h 40m

Klagenfurt

Sun 11/2

2:40 pm-1:55 pm

2 stops53h 15m

$819

BostonKlagenfurt

BOS - KLU

BOSKLU

Boston Logan Intl

Wed 10/8

5:10 pm-2:00 pm

1 stop14h 50m

Klagenfurt

Wed 10/15

5:45 am-1:50 pm

1 stop14h 05m

$1,073

BostonKlagenfurt

BOS - KLU

BOSKLU

Boston Logan Intl

Wed 10/15

5:10 pm-2:00 pm

1 stop14h 50m

Klagenfurt

Wed 10/22

5:45 am-1:50 pm

1 stop14h 05m

$1,094

Flights are sorted by cheapest round-trip flights first.

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How to get the cheapest flight ticket from United States to Klagenfurt

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

Can stopping save me money on United States to Klagenfurt flights?

You could potentially save up to 19% on your flight if you consider stops on a United States to Klagenfurt flight.

Cheap United States to Klagenfurt flight deals and tips

Find info about flight duration, direct flights, and airports for your flight from United States to Klagenfurt

Direct flights

None
There are no direct flights from United States to Klagenfurt. There are no popular flight routes from United States to Klagenfurt.
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  • When did momondo last update prices for flights from United States to Klagenfurt Airport?

    Prices for flights from United States to Klagenfurt Airport are refreshed on a daily basis.

  • How old do you have to be to fly from United States to Klagenfurt Airport?

    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 United States to Klagenfurt Airport.

  • What documentation or ID do you need to fly to Klagenfurt Airport?

    The necessary travel and health documents for your Klagenfurt Airport trip may vary depending on your travel plans and individual circumstances. Generally, you should have various documents, such as a national ID card or driver's license and a passport that is valid for six months beyond your scheduled arrival date. We recommend seeking advice from your airline or a trusted third party, such as IATA.

Traveling to a place near Klagenfurt?

Book flights to Klagenfurt if you plan to visit one of these locations
Bad Kleinkirchheim

Why use momondo?

Why should I use momondo to find a flight deal from United States to Klagenfurt?

momondo compares prices from hundreds of airlines and agents so you can find and book the best deal on flights from United States to Klagenfurt. Millions of users trust and use momondo every year so you are in good hands.

Can I find flights from United States to Klagenfurt with flexible booking policies on momondo?

Yes. momondo enables you to select and highlight flights to Klagenfurt from United States with this policy.

How can momondo help me find flights from United States to Klagenfurt?

Once all potential United States to Klagenfurt flight options are in front of you, momondo lets you sort and filter flights based on preferences such as airline, price and flight times amongst many other options.

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