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Cheap flights from Washington, D.C. to Klagenfurt from $1,457

This is the cheapest round-trip flight price found by a momondo user in the last 72 hours by searching for a flight from Washington, D.C. to Klagenfurt departing on 10/15. 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 Washington, D.C. to Klagenfurt (WAS-KLU)

Cheap round-trip flights

Logo
9:35 am - 2:00 pmIAD-KLU
22h 25m2 stops
Logo
3:00 pm - 1:55 pmKLU-IAD
52h 55m2 stops
$1,457
Find Deal
Mi, Okt 15 - Mo, Okt 20
Austrian Airlines Logo
5:25 pm - 11:25 pmIAD-KLU
24h 00m1 stop
Austrian Airlines Logo
3:00 pm - 3:25 pmKLU-IAD
54h 25m2 stops
$1,501Austrian Airlines
Find Deal
Mi, Okt 15 - Mo, Okt 20
Logo
3:36 pm - 2:00 pmIAD-KLU
16h 24m3 stops
Logo
5:45 am - 11:13 amKLU-IAD
35h 28m2 stops
$1,541
Find Deal
Mi, Okt 15 - Mo, Okt 20
Austrian Airlines Logo
5:25 pm - 2:00 pmIAD-KLU
14h 35m1 stop
Austrian Airlines Logo
3:00 pm - 2:35 pmKLU-IAD
29h 35m1 stop
$1,547Austrian Airlines
Find Deal
Mi, Okt 15 - Mo, Okt 20
Air Canada Logo
3:36 pm - 2:00 pmIAD-KLU
16h 24m3 stops
Air Canada Logo
5:45 am - 9:05 pmKLU-IAD
21h 20m3 stops
$1,734Air Canada
Find Deal
Mi, Okt 15 - Mo, Okt 20

Austrian Airlines flights from Washington, D.C. to Klagenfurt

Our best Austrian Airlines deals on Washington, D.C. to Klagenfurt flight tickets
Austrian Airlines
Oct 15
IAD5:25 pmWashington, D.C. Dulles Intl
24h 00m
1 stop
KLU11:25 pmKlagenfurt
Oct 20
KLU3:00 pmKlagenfurt
54h 25m
2 stops
IAD3:25 pmWashington, D.C. Dulles Intl
$1,501
Find similar
Austrian Airlines
Oct 15
IAD5:25 pmWashington, D.C. Dulles Intl
14h 35m
1 stop
KLU2:00 pmKlagenfurt
Oct 20
KLU3:00 pmKlagenfurt
29h 35m
1 stop
IAD2:35 pmWashington, D.C. Dulles Intl
$1,547
Find similar

momondo Fare Finder

 
Customize your flight search to find flights from Washington, D.C. 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 Washington, D.C. to Klagenfurt that are best for you.

Fly from

Fly to

Route

Depart

Return

Price

Washington, D.C.Klagenfurt

IAD - KLU

IADKLU

Washington, D.C. Dulles Intl

Mi 10/15

9:35 am-2:00 pm

2 stops22h 25m

Klagenfurt

Mo 10/20

3:00 pm-1:55 pm

2 stops52h 55m

$1,457

Washington, D.C.Klagenfurt

IAD - KLU

IADKLU

Washington, D.C. Dulles Intl

Mi 10/15

5:25 pm-11:25 pm

1 stop24h 00m

Klagenfurt

Mo 10/20

3:00 pm-3:25 pm

2 stops54h 25m

$1,501

Washington, D.C.Klagenfurt

IAD - KLU

IADKLU

Washington, D.C. Dulles Intl

Mi 10/15

3:36 pm-2:00 pm

3 stops16h 24m

Klagenfurt

Mo 10/20

5:45 am-11:13 am

2 stops35h 28m

$1,541

Washington, D.C.Klagenfurt

IAD - KLU

IADKLU

Washington, D.C. Dulles Intl

Mi 10/15

5:25 pm-2:00 pm

1 stop14h 35m

Klagenfurt

Mo 10/20

3:00 pm-2:35 pm

1 stop29h 35m

$1,547

Washington, D.C.Klagenfurt

IAD - KLU

IADKLU

Washington, D.C. Dulles Intl

Mi 10/15

3:36 pm-2:00 pm

3 stops16h 24m

Klagenfurt

Mo 10/20

5:45 am-9:05 pm

3 stops21h 20m

$1,734

Flights are sorted by cheapest round-trip flights first.

Sorted by cheapest first

See travel insights to Klagenfurt from

How to get the cheapest flight ticket from Washington, D.C. 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

How long does it take to fly to Klagenfurt?

If you’re flying from a popular airport in Washington, D.C., such as Washington, D.C. or Baltimore, and flying into Klagenfurt, then you can expect flight times to average 17h 47m and 41h 19m, respectively.

When to book flights from Washington, D.C. to Klagenfurt

Are you open to changing your travel dates? Check out the ideal times to fly from Washington, D.C. to Klagenfurt according to our flight data. Find out which month and days have the cheapest flights.
Estimated round-trip price

Cheap Washington, D.C. to Klagenfurt (WAS to KLU) flight deals and tips

Find info about flight duration, direct flights, and airports for your flight from Washington, D.C. to Klagenfurt

Direct flights

None
There are no direct flights from Washington, D.C. to Klagenfurt. There are no popular flight routes from Washington, D.C. to Klagenfurt.
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  • How far is Washington, D.C. to Klagenfurt by plane?

    The straight-line distance from Washington, D.C. to Klagenfurt is 4394.0 mi. By plane, this route typically takes 14h 35m.

  • When did momondo last update prices for flights from Washington, D.C. to Klagenfurt Airport?

    Prices for flights from Washington, D.C. to Klagenfurt Airport were last updated today.

  • How old do you have to be to fly from Washington, D.C. to Klagenfurt Airport?

    The minimum age for a child to fly alone is five, but airlines that offer an unaccompanied minor (UNMR) service may have their own age limitations. Flight duration, scheduling, and layovers are among the considerations that may influence age limits. We recommend that you double-check with the airline you are booking with for travel from Washington, D.C. to Klagenfurt Airport.

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

    The required travel and health documents for your Klagenfurt Airport 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 Klagenfurt Airport. We recommend that you seek guidance from your airline or a reliable 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 Washington, D.C. to Klagenfurt?

Finding the right flight to Klagenfurt from Washington, D.C. is quick and easy when you have a range of options in front of you, from reputable agents and recognisable airlines. Options that can then be filtered down to find the best fit. That is what momondo does. We make finding flights to Klagenfurt quick and easy, saving you time and money.

Can I find flights from Washington, D.C. to Klagenfurt with flexible booking policies on momondo?

All flight searches from Washington, D.C. to Klagenfurt on momondo can be filtered to show those which offer flexible booking policies.

How can momondo help me find flights from Washington, D.C. to Klagenfurt?

Once all potential Washington, D.C. 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 Washington, D.C. to Klagenfurt right now. Can momondo alert me if prices change?

Price alerts on flights to Klagenfurt from Washington, D.C. are quick and easy to set up on momondo. Simply perform a search and select the price alert feature. It is as simple as that.

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