Find Cheap Flights from Chicago O'Hare International to Washington Dulles Intl (ORD - IAD)

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Sat 11/25
Sat 12/2
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Good to Know

Low Season:
December
Best time to beat the crowds
3%
expected price decrease
High Season:
July
Most popular time to fly
2%
expected price increase
Average Price:
$278
(avg. price over the last 2 weeks)
Good Deal:
$174
or less (round trip)

When to Book Flights from Chicago O'Hare International to Washington Dulles Intl

Average price per month
Flight prices as travel date approaches
-1 day
-2 days

Top tips for Finding a Cheap Flight

Looking for a cheap flight? 25% of our users found flights on this route for $174 or less.
The cheapest flight from Chicago O'Hare International to Washington Dulles Intl was found 62 days before departure, on average.
Book at least 3 weeks before departure in order to get a below-average price.
High season is considered to be June, July and August. The cheapest month to fly is December.
Morning departure is around 2% cheaper than an evening flight, on average*.
*Average of the lowest prices shown in KAYAK’s search results for departures within the next 30 days

FAQs for Booking Chicago O'Hare International to Washington Dulles Intl Flights

How long does a flight from Chicago O'Hare International to Washington Dulles Intl take?
An average nonstop flight takes 1h 44m, covering a distance of 588 miles.
How many flights are there between Chicago O'Hare International and Washington Dulles Intl?
There are 416 (nonstop) flights between Chicago O'Hare International and Washington Dulles Intl per week, averaging 63 per day.
Which airlines provide the cheapest flights from Chicago O'Hare International to Washington Dulles Intl?
In the past 3 days, the cheapest round-trip tickets were found on Frontier ($141), Multiple Airlines ($205) and United ($207).
Do I need a passport to fly between Chicago O'Hare International and Washington Dulles Intl?
No.
Which airlines fly most frequently between Chicago O'Hare International and Washington Dulles Intl?
Air Canada (15 times daily), United (12 times daily), South African (8 times daily) are the most frequent flyers on this route.
What’s the cheapest day of the week to fly Chicago O'Hare International to Washington Dulles Intl?
For Chicago O'Hare International to Washington Dulles Intl, Tuesday is the cheapest day to fly on average and Sunday is the most expensive. Flying from Washington Dulles Intl back to Chicago O'Hare International, the best deals are generally found on Tuesday, with Friday being the most expensive.

Book cheap flights from Chicago O'Hare International to Washington Dulles Intl (round-trip)

Airports
Origin
Chicago
$141
only
$141
Destination
Washington
$141
only
$141
Tue, May 8
ORD
IAD
1h 55m
Tue, May 15
IAD
ORD
2h 14m
Trip: 8 days
6.1GoodShow reviews
Overall 6.1 Good
Based on 21 reviews
Overall
5.9
Boarding
6.4
Comfort
5.4
Crew
6.8
Entertainment
4.5
Food
4.7
ORD
IAD
Mediocre 3.0

Not much, the time it takes to get to the places is short which is nice.

Delayed flight, only $15 dollars of food too late and not acceptable at restaurants, too long of a delayed flight.

ORD
IAD
Okay 4.3

The whole trip is pretty bad. It is delayed for 5 hours. And no free water on the airplane. You basically has to pay for everything: food, checking luggage, and carryon bags. No entertainment at all. The flight tickets are not cheaper anyway.

DEN
RNO
Excellent 10.0

Very efficient boarding. Although I thought it strange at first that Frontier charges for overhead storage, the storage situation was roomy even with a full flight.

ORD
IAD
Mediocre 2.0

wait times kept changing and got totally ridiculous. my uber cost me twice as much and i was delayed 4 hours. never flying with you ever again.

ORD
IAD
Good 7.3

There wasn't any in flight entertainment and I didn't order food, so that's why my rating is neutral. Our flight back was 30 min early, so that was great.

Mon, Dec 18
ORD
IAD
12h 12m
Tue, Jan 16
IAD
ORD
20h 39m
Trip: 30 days
Overall 0.0 Poor
Based on 0 reviews
Thu, Dec 7
ORD
IAD
1h 55m
Sat, Dec 9
IAD
ORD
2h 01m
Trip: 3 days
7.1GoodShow reviews
Overall 7.1 Good
Based on 66 reviews
Overall
7.2
Boarding
7.3
Comfort
6.9
Crew
7.7
Entertainment
6.5
Food
6.4
ORD
IAD
Mediocre 2.0

Again- nothing

This flight was canceled for me! Why am I being asked how I would rate it?!

ORD
IAD
Excellent 8.0

Everything went pretty well minus the delayed flight from the start

Some older woman yelling at a teenager for "pushing her in the back of her seat" while in flight

ORD
IAD
Excellent 9.0

Had to pay for movies and snacks.

ORD
IAD
Mediocre 3.3

Go

ORD
IAD
Good 6.6

Service

Total disaster due to some snow, excessive delays

Tue, Feb 6
ORD
IAD
5h 37m
Sat, Feb 10
IAD
ORD
5h 08m
Trip: 5 days
8.1ExcellentShow reviews
Overall 8.1 Excellent
Based on 6928 reviews
Overall
8.2
Boarding
8.2
Comfort
8.3
Crew
8.5
Entertainment
8.0
Food
7.8
JFK
DEN
Okay 4.6

Okay food and drinks

There were smelly people on a hot plane making more smells here and there for over 3 hours. I couldn’t breathe. My entertainment console did not work to full capacity

JFK
MSY
Excellent 10.0

Everything was great

PIT
BOS
Excellent 9.0

Prefer blue chips instead of cheeze its

RDU
JFK
Good 7.0

Good experience. Staff were friendly, efficient, and professional.

N/A

MCO
AUS
Okay 4.0

The night before my flight from Austin to Orlando, my flight got canceled. JetBlue could not get me to Orlando and I had to quickly find another flight to Orlando with another airline company. Very displeased with JetBlue's decision to cancel my flight the night before when no other airline company canceled theirs.

Sat, May 12
ORD
IAD
1h 55m
Wed, May 16
IAD
ORD
2h 14m
Trip: 5 days
6.1GoodShow reviews
Overall 6.1 Good
Based on 21 reviews
Overall
5.9
Boarding
6.4
Comfort
5.4
Crew
6.8
Entertainment
4.5
Food
4.7
ORD
IAD
Excellent 10.0

This was the first time I have flown Frontier. Even with a checked bag fee ($30 each way), my total fare was still less than half of what it would have been for competitors the same week. The planes were clean, flights were on time, and the crew were extremely friendly and helpful!

There wasn't anything not to like! The experience was seriously better than I imagined it would be.

ORD
IAD
Mediocre 2.0

wait times kept changing and got totally ridiculous. my uber cost me twice as much and i was delayed 4 hours. never flying with you ever again.

LAS
BNA
Good 7.6

Friendliness and efficiency.

No Wifi. Very little room for anything. Tiny tray tables.

ORD
IAD
Mediocre 2.0

My 10 month old pup had to have emergency gastro surgery 22 hours before we were to leave. Frontier would not waive the $99 re-ticketing fee per ticket. They said we still could have gone on the trip! Even though if my dog coded and they need my instruction and I was 33,000 ft in the air... First time we ever booked with them and it will be the last time! We spent 385.00 and are getting 158.00 back in a credit which we are donating the credit code to our local county charity in case some could use it for an emergency flight. Poor Frontier can't seem to be able to find a write over code to refund me my full value of tickets. My emergency wasn't on their radar. Heartless.

DEN
RNO
Excellent 10.0

Very efficient boarding. Although I thought it strange at first that Frontier charges for overhead storage, the storage situation was roomy even with a full flight.

Tue, Apr 10
ORD
IAD
1h 52m
Sat, Apr 21
IAD
ORD
2h 12m
Trip: 12 days
6.1GoodShow reviews
Overall 6.1 Good
Based on 21 reviews
Overall
5.9
Boarding
6.4
Comfort
5.4
Crew
6.8
Entertainment
4.5
Food
4.7
ORD
IAD
Excellent 8.0

to expensive to cary on a bag.

ORD
IAD
Mediocre 2.0

wait times kept changing and got totally ridiculous. my uber cost me twice as much and i was delayed 4 hours. never flying with you ever again.

ORD
IAD
Okay 4.3

All the extra expenses for seats, baggage, ect.

ORD
IAD
Mediocre 3.3

The price

Both there and back our flight was delayed over an hour. The seats were very uncomfortable and with little leg room. when you check in on line it seems like you you don't have any other option but to pay for your seats. Don't do it-- just have them pick your seats-- you will be with your travel mate most likely. If money is a concern and you don't mind being delayed, then it is worth it. Otherwise don't do it!

DEN
RNO
Excellent 10.0

Very efficient boarding. Although I thought it strange at first that Frontier charges for overhead storage, the storage situation was roomy even with a full flight.

Thu, Dec 14
ORD
IAD
1h 45m
Sat, Dec 16
IAD
ORD
2h 13m
Trip: 3 days
7.1GoodShow reviews
Overall 7.1 Good
Based on 66 reviews
Overall
7.2
Boarding
7.3
Comfort
6.9
Crew
7.7
Entertainment
6.5
Food
6.4
ORD
IAD
Excellent 10.0

Had fun watching free movies on my device, although the connection didn't work for the first leg. The plane was new/upgraded, a ton of legroom on my second leg Airbus.

ORD
IAD
Excellent 10.0

The crew was very polite at every moment

I really liked everything

ORD
IAD
Good 6.6

Service

Total disaster due to some snow, excessive delays

ORD
IAD
Excellent 10.0

For the basic economy seat there was plenty of room and the staff was excellent. Honestly the best domestic flight I've taken in a long time.

ORD
IAD
Mediocre 2.0

Again- nothing

This flight was canceled for me! Why am I being asked how I would rate it?!

Tue, Nov 28
ORD
IAD
23h 29m
Thu, Nov 30
IAD
ORD
30h 46m
Trip: 3 days
Overall 0.0 Poor
Based on 0 reviews
Tue, Jan 2
ORD
IAD
1h 44m
Sat, Jan 6
IAD
ORD
2h 11m
Trip: 5 days
7.1GoodShow reviews
Overall 7.1 Good
Based on 66 reviews
Overall
7.2
Boarding
7.3
Comfort
6.9
Crew
7.7
Entertainment
6.5
Food
6.4
ORD
IAD
Excellent 10.0

The crew was very polite at every moment

I really liked everything

ORD
IAD
Excellent 10.0

temperature was right not blanket needed

they ignore me never offer me a drink and I was thirsty

ORD
IAD
Excellent 10.0

For the basic economy seat there was plenty of room and the staff was excellent. Honestly the best domestic flight I've taken in a long time.

ORD
IAD
Excellent 9.0

Had to pay for movies and snacks.

ORD
IAD
Excellent 8.0

Lack of leg room, no TVs, no free wifi

Fri, Apr 13
ORD
IAD
1h 52m
Tue, Apr 17
IAD
ORD
2h 12m
Trip: 5 days
6.1GoodShow reviews
Overall 6.1 Good
Based on 21 reviews
Overall
5.9
Boarding
6.4
Comfort
5.4
Crew
6.8
Entertainment
4.5
Food
4.7
ORD
IAD
Mediocre 2.0

My 10 month old pup had to have emergency gastro surgery 22 hours before we were to leave. Frontier would not waive the $99 re-ticketing fee per ticket. They said we still could have gone on the trip! Even though if my dog coded and they need my instruction and I was 33,000 ft in the air... First time we ever booked with them and it will be the last time! We spent 385.00 and are getting 158.00 back in a credit which we are donating the credit code to our local county charity in case some could use it for an emergency flight. Poor Frontier can't seem to be able to find a write over code to refund me my full value of tickets. My emergency wasn't on their radar. Heartless.

ORD
IAD
Okay 4.3

All the extra expenses for seats, baggage, ect.

ORD
IAD
Excellent 8.0

Easy boarding easy check in

Nothing that bad, chairs are maybe a bit thin but not terribly uncomfortable

ORD
IAD
Mediocre 2.0

wait times kept changing and got totally ridiculous. my uber cost me twice as much and i was delayed 4 hours. never flying with you ever again.

ORD
IAD
Mediocre 3.3

The price

Both there and back our flight was delayed over an hour. The seats were very uncomfortable and with little leg room. when you check in on line it seems like you you don't have any other option but to pay for your seats. Don't do it-- just have them pick your seats-- you will be with your travel mate most likely. If money is a concern and you don't mind being delayed, then it is worth it. Otherwise don't do it!

Thu, Feb 1
ORD
IAD
7h 01m
Sun, Feb 4
IAD
ORD
6h 46m
Trip: 4 days
8.1ExcellentShow reviews
Overall 8.1 Excellent
Based on 6928 reviews
Overall
8.2
Boarding
8.2
Comfort
8.3
Crew
8.5
Entertainment
8.0
Food
7.8
JFK
SEA
Okay 5.6

Leg room was good.

$5 for the use of a pillow. Boarding was a little confusing

OAK
LGB
Excellent 9.6

Great trip

FLL
EWR
Okay 4.3

No WiFi and tvs were not working

JFK
MSY
Excellent 10.0

Everything was great

JFK
DEN
Okay 4.6

Okay food and drinks

There were smelly people on a hot plane making more smells here and there for over 3 hours. I couldn’t breathe. My entertainment console did not work to full capacity

Thu, Jan 25
ORD
IAD
1h 51m
Mon, Jan 29
IAD
ORD
2h 11m
Trip: 5 days
7.1GoodShow reviews
Overall 7.1 Good
Based on 66 reviews
Overall
7.2
Boarding
7.3
Comfort
6.9
Crew
7.7
Entertainment
6.5
Food
6.4
ORD
IAD
Mediocre 3.0

This flight was delayed around 3 hours.

ORD
IAD
Excellent 8.0

Everything went pretty well minus the delayed flight from the start

Some older woman yelling at a teenager for "pushing her in the back of her seat" while in flight

ORD
IAD
Excellent 10.0

Had fun watching free movies on my device, although the connection didn't work for the first leg. The plane was new/upgraded, a ton of legroom on my second leg Airbus.

ORD
IAD
Excellent 8.0

Lack of leg room, no TVs, no free wifi

ORD
IAD
Excellent 10.0

The crew was very polite at every moment

I really liked everything

Tue, Feb 6
ORD
IAD
1h 51m
Sat, Feb 10
IAD
ORD
2h 11m
Trip: 5 days
7.1GoodShow reviews
Overall 7.1 Good
Based on 66 reviews
Overall
7.2
Boarding
7.3
Comfort
6.9
Crew
7.7
Entertainment
6.5
Food
6.4
ORD
IAD
Excellent 8.0

Lack of leg room, no TVs, no free wifi

ORD
IAD
Good 6.6

Service

Total disaster due to some snow, excessive delays

ORD
IAD
Mediocre 2.0

Again- nothing

This flight was canceled for me! Why am I being asked how I would rate it?!

ORD
IAD
Excellent 10.0

Had fun watching free movies on my device, although the connection didn't work for the first leg. The plane was new/upgraded, a ton of legroom on my second leg Airbus.

ORD
IAD
Excellent 10.0

For the basic economy seat there was plenty of room and the staff was excellent. Honestly the best domestic flight I've taken in a long time.

Thu, Nov 30
ORD
IAD
27h 14m
Sun, Dec 3
IAD
ORD
30h 46m
Trip: 4 days
6.1GoodShow reviews
Overall 6.1 Good
Based on 21 reviews
Overall
5.9
Boarding
6.4
Comfort
5.4
Crew
6.8
Entertainment
4.5
Food
4.7
DEN
RNO
Excellent 10.0

Very efficient boarding. Although I thought it strange at first that Frontier charges for overhead storage, the storage situation was roomy even with a full flight.

ORD
IAD
Mediocre 2.0

My 10 month old pup had to have emergency gastro surgery 22 hours before we were to leave. Frontier would not waive the $99 re-ticketing fee per ticket. They said we still could have gone on the trip! Even though if my dog coded and they need my instruction and I was 33,000 ft in the air... First time we ever booked with them and it will be the last time! We spent 385.00 and are getting 158.00 back in a credit which we are donating the credit code to our local county charity in case some could use it for an emergency flight. Poor Frontier can't seem to be able to find a write over code to refund me my full value of tickets. My emergency wasn't on their radar. Heartless.

ORD
IAD
Okay 4.3

All the extra expenses for seats, baggage, ect.

ORD
IAD
Excellent 10.0

This was the first time I have flown Frontier. Even with a checked bag fee ($30 each way), my total fare was still less than half of what it would have been for competitors the same week. The planes were clean, flights were on time, and the crew were extremely friendly and helpful!

There wasn't anything not to like! The experience was seriously better than I imagined it would be.

ORD
IAD
Mediocre 2.0

wait times kept changing and got totally ridiculous. my uber cost me twice as much and i was delayed 4 hours. never flying with you ever again.

Wed, Feb 28
ORD
IAD
1h 47m
Thu, Mar 8
IAD
ORD
2h 03m
Trip: 9 days
7.1GoodShow reviews
Overall 7.1 Good
Based on 66 reviews
Overall
7.2
Boarding
7.3
Comfort
6.9
Crew
7.7
Entertainment
6.5
Food
6.4
ORD
IAD
Excellent 10.0

The crew was very polite at every moment

I really liked everything

ORD
IAD
Excellent 8.0

Lack of leg room, no TVs, no free wifi

ORD
IAD
Mediocre 3.0

This flight was delayed around 3 hours.

ORD
IAD
Excellent 10.0

temperature was right not blanket needed

they ignore me never offer me a drink and I was thirsty

ORD
IAD
Mediocre 3.3

Go

Thu, Mar 1
ORD
IAD
1h 50m
Wed, Mar 7
IAD
ORD
2h 12m
Trip: 7 days
7.1GoodShow reviews
Overall 7.1 Good
Based on 66 reviews
Overall
7.2
Boarding
7.3
Comfort
6.9
Crew
7.7
Entertainment
6.5
Food
6.4
ORD
IAD
Excellent 8.0

Lack of leg room, no TVs, no free wifi

ORD
IAD
Mediocre 2.0

Again- nothing

This flight was canceled for me! Why am I being asked how I would rate it?!

ORD
IAD
Excellent 8.0

Everything went pretty well minus the delayed flight from the start

Some older woman yelling at a teenager for "pushing her in the back of her seat" while in flight

ORD
IAD
Excellent 9.0

Had to pay for movies and snacks.

ORD
IAD
Excellent 10.0

The crew was very polite at every moment

I really liked everything

Sat, Mar 31
ORD
IAD
1h 44m
Wed, Apr 4
IAD
ORD
2h 07m
Trip: 5 days
7.1GoodShow reviews
Overall 7.1 Good
Based on 66 reviews
Overall
7.2
Boarding
7.3
Comfort
6.9
Crew
7.7
Entertainment
6.5
Food
6.4
ORD
IAD
Excellent 10.0

The crew was very polite at every moment

I really liked everything

ORD
IAD
Mediocre 2.0

Again- nothing

This flight was canceled for me! Why am I being asked how I would rate it?!

ORD
IAD
Excellent 10.0

temperature was right not blanket needed

they ignore me never offer me a drink and I was thirsty

ORD
IAD
Excellent 10.0

Had fun watching free movies on my device, although the connection didn't work for the first leg. The plane was new/upgraded, a ton of legroom on my second leg Airbus.

ORD
IAD
Good 6.0

Had to check a bag I've carried on several other times.

Wed, Apr 4
ORD
IAD
1h 49m
Sat, Apr 7
IAD
ORD
2h 05m
Trip: 4 days
7.1GoodShow reviews
Overall 7.1 Good
Based on 66 reviews
Overall
7.2
Boarding
7.3
Comfort
6.9
Crew
7.7
Entertainment
6.5
Food
6.4
ORD
IAD
Mediocre 3.0

This flight was delayed around 3 hours.

ORD
IAD
Good 6.0

Had to check a bag I've carried on several other times.

ORD
IAD
Excellent 8.0

Everything went pretty well minus the delayed flight from the start

Some older woman yelling at a teenager for "pushing her in the back of her seat" while in flight

ORD
IAD
Excellent 10.0

Had fun watching free movies on my device, although the connection didn't work for the first leg. The plane was new/upgraded, a ton of legroom on my second leg Airbus.

ORD
IAD
Excellent 10.0

For the basic economy seat there was plenty of room and the staff was excellent. Honestly the best domestic flight I've taken in a long time.

Fri, Dec 15
ORD
IAD
9h 11m
Sun, Dec 17
IAD
ORD
7h 16m
Trip: 3 days
7.1GoodShow reviews
Overall 7.1 Good
Based on 66 reviews
Overall
7.2
Boarding
7.3
Comfort
6.9
Crew
7.7
Entertainment
6.5
Food
6.4
ORD
IAD
Excellent 8.0

Everything went pretty well minus the delayed flight from the start

Some older woman yelling at a teenager for "pushing her in the back of her seat" while in flight

ORD
IAD
Good 6.0

Had to check a bag I've carried on several other times.

ORD
IAD
Excellent 8.0

Lack of leg room, no TVs, no free wifi

ORD
IAD
Excellent 10.0

The crew was very polite at every moment

I really liked everything

ORD
IAD
Excellent 9.0

Had to pay for movies and snacks.

Sun, Dec 31
ORD
IAD
1h 50m
Tue, Jan 2
IAD
ORD
2h 10m
Trip: 3 days
7.1GoodShow reviews
Overall 7.1 Good
Based on 66 reviews
Overall
7.2
Boarding
7.3
Comfort
6.9
Crew
7.7
Entertainment
6.5
Food
6.4
ORD
IAD
Mediocre 3.3

Go

ORD
IAD
Excellent 8.0

Lack of leg room, no TVs, no free wifi

ORD
IAD
Excellent 8.0

Everything went pretty well minus the delayed flight from the start

Some older woman yelling at a teenager for "pushing her in the back of her seat" while in flight

ORD
IAD
Good 6.0

Had to check a bag I've carried on several other times.

ORD
IAD
Excellent 10.0

The crew was very polite at every moment

I really liked everything

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The fares displayed include all taxes and fees for economy class travel and were found by the provider in the last 72 hours. Seats are limited and may not be available on all flights and days. Fares are subject to change and may not be available on all flights or dates of travel. Some carriers charge additional fees for extra checked bags. Please check the carriers' sites.