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Cheap flights from the United States to Klagenfurt from $272

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 8/11. Fares may change, and may not be available for all flights or travel dates. Click the price to refresh the search for this deal.
1 adult
1 adult, Economy, 0 bags

Find the cheapest flights from the United States to Klagenfurt

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

Enter your travel dates to find the best prices.
Air Canada Logo
12:55 pm - 2:00 pm
RSW
-
KLU
19h 05m
2 stops
Air Canada Logo
5:45 am - 12:00 pm
KLU
-
RSW
36h 15m
2 stops
$880Air Canada
Sat, Nov 7 - Wed, Nov 11
Air Canada Logo
7:45 am - 2:00 pm
SEA
-
KLU
21h 15m
2 stops
Air Canada Logo
5:45 am - 8:59 pm
KLU
-
SEA
24h 14m
2 stops
$886Air Canada
Sat, Dec 5 - Wed, Dec 9
Air Canada Logo
4:40 pm - 2:00 pm
SFO
-
KLU
36h 20m
2 stops
Air Canada Logo
5:45 am - 11:05 am
KLU
-
SFO
38h 20m
2 stops
$886Air Canada
Fri, Dec 4 - Tue, Dec 8
Air Canada Logo
8:55 pm - 2:00 pm
MIA
-
KLU
35h 05m
2 stops
Air Canada Logo
5:45 am - 8:19 pm
KLU
-
MIA
20h 34m
2 stops
$900Air Canada
Fri, Nov 13 - Tue, Nov 17
Multiple Airlines Logo
12:30 am - 11:25 am
JFK
-
KLU
28h 55m
1 stop
Multiple Airlines Logo
3:05 pm - 10:30 pm
KLU
-
JFK
13h 25m
1 stop
$1,098Multiple Airlines
Tue, Aug 4 - Sun, Aug 9
Multiple Airlines Logo
6:50 pm - 1:25 pm
SEA
-
KLU
33h 35m
2 stops
Multiple Airlines Logo
2:15 pm - 11:55 am
KLU
-
SEA
30h 40m
2 stops
$1,121Multiple Airlines
Fri, Aug 14 - Fri, Aug 21
Lufthansa Logo
5:30 pm - 1:35 pm
JFK
-
KLU
38h 05m
2 stops
Lufthansa Logo
2:05 pm - 1:35 pm
KLU
-
JFK
53h 30m
2 stops
$1,132Lufthansa
Wed, Aug 5 - Sun, Aug 9
Lufthansa Logo
9:50 pm - 2:00 pm
JFK
-
KLU
34h 10m
2 stops
Lufthansa Logo
11:10 am - 3:00 pm
KLU
-
JFK
33h 50m
2 stops
$1,143Lufthansa
Thu, Aug 13 - Thu, Aug 20
Austrian Airlines Logo
12:41 pm - 2:00 pm
BOS
-
KLU
19h 19m
2 stops
Austrian Airlines Logo
5:50 am - 1:50 pm
KLU
-
BOS
14h 00m
1 stop
$1,168Austrian Airlines
Wed, Sep 16 - Sat, Sep 26
Austrian Airlines Logo
5:10 pm - 2:00 pm
BOS
-
KLU
14h 50m
1 stop
Austrian Airlines Logo
5:50 am - 1:50 pm
KLU
-
BOS
14h 00m
1 stop
$1,171Austrian Airlines
Sat, Sep 19 - Sat, Sep 26

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Lufthansa flights from United States to Klagenfurt

Our best Lufthansa deals on United States to Klagenfurt flight tickets
Lufthansa
Aug 5
JFK5:30 pmNew York John F Kennedy Intl
38h 05m
2 stops
KLU1:35 pmKlagenfurt
Aug 9
KLU2:05 pmKlagenfurt
53h 30m
2 stops
JFK1:35 pmNew York John F Kennedy Intl
$1,132
Lufthansa
Aug 13
JFK9:50 pmNew York John F Kennedy Intl
34h 10m
2 stops
KLU2:00 pmKlagenfurt
Aug 20
KLU11:10 amKlagenfurt
33h 50m
2 stops
JFK3:00 pmNew York John F Kennedy Intl
$1,143
Lufthansa
Aug 2
BOS8:05 pmBoston Logan Intl
15h 55m
2 stops
KLU6:00 pmKlagenfurt
Aug 9
KLU2:05 pmKlagenfurt
33h 35m
2 stops
BOS5:40 pmBoston Logan Intl
$1,158

Austrian Airlines flights from United States to Klagenfurt

Our best Austrian Airlines deals on United States to Klagenfurt flight tickets
Austrian Airlines
Sep 16
BOS12:41 pmBoston Logan Intl
19h 19m
2 stops
KLU2:00 pmKlagenfurt
Sep 26
KLU5:50 amKlagenfurt
14h 00m
1 stop
BOS1:50 pmBoston Logan Intl
$1,168
Austrian Airlines
Sep 19
BOS5:10 pmBoston Logan Intl
14h 50m
1 stop
KLU2:00 pmKlagenfurt
Sep 26
KLU5:50 amKlagenfurt
14h 00m
1 stop
BOS1:50 pmBoston Logan Intl
$1,171
Austrian Airlines
Aug 14
LAX3:05 pmLos Angeles
13h 55m
1 stop
KLU2:00 pmKlagenfurt
Aug 21
KLU2:15 pmKlagenfurt
31h 50m
1 stop
LAX1:05 pmLos Angeles
$1,218

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 July 4, 2026.
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

Cheapest round-trip

Fort MyersKlagenfurt

RSW - KLU

RSWKLU

Fort Myers SW Florida Intl

Sat 11/7

12:55 pm-2:00 pm

2 stops19h 05m

Klagenfurt

Wed 11/11

5:45 am-12:00 pm

2 stops36h 15m

$880

SeattleKlagenfurt

SEA - KLU

SEAKLU

Seattle/Tacoma Intl

Sat 12/5

7:45 am-2:00 pm

2 stops21h 15m

Klagenfurt

Wed 12/9

5:45 am-8:59 pm

2 stops24h 14m

$886

San FranciscoKlagenfurt

SFO - KLU

SFOKLU

San Francisco

Fri 12/4

4:40 pm-2:00 pm

2 stops36h 20m

Klagenfurt

Tue 12/8

5:45 am-11:05 am

2 stops38h 20m

$886

MiamiKlagenfurt

MIA - KLU

MIAKLU

Miami

Fri 11/13

8:55 pm-2:00 pm

2 stops35h 05m

Klagenfurt

Tue 11/17

5:45 am-8:19 pm

2 stops20h 34m

$900

New YorkKlagenfurt

JFK - KLU

JFKKLU

New York John F Kennedy Intl

Tue 8/4

12:30 am-11:25 am

1 stop28h 55m

Klagenfurt

Sun 8/9

3:05 pm-10:30 pm

1 stop13h 25m

$1,098

SeattleKlagenfurt

SEA - KLU

SEAKLU

Seattle/Tacoma Intl

Fri 8/14

6:50 pm-1:25 pm

2 stops33h 35m

Klagenfurt

Fri 8/21

2:15 pm-11:55 am

2 stops30h 40m

$1,121

New YorkKlagenfurt

JFK - KLU

JFKKLU

New York John F Kennedy Intl

Wed 8/5

5:30 pm-1:35 pm

2 stops38h 05m

Klagenfurt

Sun 8/9

2:05 pm-1:35 pm

2 stops53h 30m

$1,132

New YorkKlagenfurt

JFK - KLU

JFKKLU

New York John F Kennedy Intl

Thu 8/13

9:50 pm-2:00 pm

2 stops34h 10m

Klagenfurt

Thu 8/20

11:10 am-3:00 pm

2 stops33h 50m

$1,143

BostonKlagenfurt

BOS - KLU

BOSKLU

Boston Logan Intl

Wed 9/16

12:41 pm-2:00 pm

2 stops19h 19m

Klagenfurt

Sat 9/26

5:50 am-1:50 pm

1 stop14h 00m

$1,168
Quickest round-trip

BostonKlagenfurt

BOS - KLU

BOSKLU

Boston Logan Intl

Sat 9/19

5:10 pm-2:00 pm

1 stop14h 50m

Klagenfurt

Sat 9/26

5:50 am-1:50 pm

1 stop14h 00m

$1,171

Flights are sorted by cheapest round-trip flights first.

Showing 1-10 of 20 resultsSorted by cheapest first
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See travel insights to Klagenfurt from

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 42% 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

Fastest flight time

9h 50m

Direct flights

None
The fastest flight from United States to Klagenfurt takes 9h 50m
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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Frequently asked questions about flying from the United States to Klagenfurt

  • 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.

I’m not ready to book a flight from United States to Klagenfurt right now. Can momondo alert me if prices change?

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