Find Cheap Flights from Chicago to Washington Dulles Intl (CHI - IAD)

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Good to Know

Low Season:
December
Best time to beat the crowds
2%
expected price decrease
High Season:
June
Most popular time to fly
15%
expected price increase
Average Price:
$285
(avg. price over the last 2 weeks)
Good Deal:
$184
or less (round trip)

When to Book Flights from Chicago 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 $184 or less.
The cheapest flight from Chicago to Washington Dulles Intl was found 74 days before departure, on average.
Book at least 2 weeks before departure in order to get a below-average price.
High season is considered to be May, June and July. The cheapest month to fly is December.
Morning departure is around 7% 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 to Washington Dulles Intl Flights

How long does a flight from Chicago to Washington Dulles Intl take?
An average nonstop flight takes 1h 44m, covering a distance of 572 miles.
How many flights are there between Chicago and Washington Dulles Intl?
There are 368 (nonstop) flights between Chicago and Washington Dulles Intl per week, averaging 55 per day.
Which airlines provide the cheapest flights from Chicago to Washington Dulles Intl?
In the past 3 days, the cheapest round-trip tickets were found on American Airlines ($131), United ($147) and Multiple Airlines ($176).
Do I need a passport to fly between Chicago and Washington Dulles Intl?
No.
Which airlines fly most frequently between Chicago and Washington Dulles Intl?
Air Canada (11 times daily), United (9 times daily), ANA (7 times daily) are the most frequent flyers on this route.
What’s the cheapest day of the week to fly Chicago to Washington Dulles Intl?
For Chicago to Washington Dulles Intl, Wednesday is the cheapest day to fly on average and Thursday is the most expensive. Flying from Washington Dulles Intl back to Chicago, the best deals are generally found on Saturday, with Tuesday being the most expensive.

Book cheap flights from Chicago to Washington Dulles Intl (round-trip)

Airports
Origin
Chicago
$131
only
$131
$198
only
$198
Destination
Washington
$131
only
$131
Wed, Apr 18
ORD
IAD
6h 29m
Sat, Apr 21
IAD
ORD
4h 27m
Trip: 4 days
7.2GoodShow reviews
Overall 7.2 Good
Based on 27334 reviews
Overall
7.3
Boarding
7.5
Comfort
7.1
Crew
7.8
Entertainment
6.7
Food
6.6
MAD
PHL
Good 7.0

Flight was not full.

Luggage was very late and arrived at the wrong carousel.

MAD
JFK
Good 6.0

Films, TV screens did not work

TPA
DFW
Good 6.3

Decent boarding group, same snacks, same flight attendants (who were very nice)

My only gripe is that paying for an assigned seat is only allowed 48 hours before takeoff and costs at least $30, twice what Spirit charges to allow you to select a seat during booking, so it is worse. No one watched us to ensure that we didn’t use the overhead bins (a stipulation of the fare) but we did comply anyway. We chose to take our chances and were assigned seats at the gate 16 rows apart and both in the middle seat.

BCN
JFK
Mediocre 2.0

NOTHING !! I lost my flight because in the email I received you all put the wrong airline on it and nobody took responsability for it . I ended up paying $311.00 to get the next flight back to Austin .

In the email it was stated that my first flight was with British Airways, so i wasted time making the wrong line . Only to get to the counter and waste more tome trying to find me in the system to then tell me my flight is with American Airline . I double check my email where it clearly shows: 1st flight-British Airway and 2nd flight-American Airline . This is not acceptable, nobody wants to take responsability for sending me the wrong information in the email. Had I know both of my flights were with American Airline I wouldn’t lost my plane because I would make the right line to begin with .

SFO
LAX
Excellent 10.0

great flight

Sat, Feb 24
ORD
IAD
16h 29m
Sun, Feb 25
IAD
ORD
2h 03m
Trip: 2 days
7.0GoodShow reviews
Overall 7.0 Good
Based on 68 reviews
Overall
7.2
Boarding
7.4
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
Good 6.6

Service

Total disaster due to some snow, excessive delays

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

temperature was right not blanket needed

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

ORD
IAD
Good 6.0

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

Sat, Apr 21
ORD
IAD
1h 45m
Mon, Apr 23
IAD
ORD
4h 27m
Trip: 3 days
Overall 0.0 Poor
Based on 0 reviews
Wed, Jan 31
MDW
IAD
3h 35m
Fri, Feb 2
IAD
MDW
6h 10m
Trip: 3 days
7.8GoodShow reviews
Overall 7.8 Good
Based on 15315 reviews
Overall
8.0
Boarding
8.1
Comfort
7.7
Crew
8.4
Entertainment
7.5
Food
7.3
BOS
AUS
Good 6.0

Delayed so I was not home until middle of the night.

LGA
PIT
Excellent 10.0

Our original flight was delayed and Marika, at the Delta gate of another flight to the same city, was able to get us on the flight that was going to our city. We were so grateful to get home before the winter storm! We appreciate your staff and the help their quick, efficient manner to get us on a new flight!

MEX
ATL
Good 7.0

Beautiful plane, great entertainment system, two bathrooms for economy class, decent food

ATL
BWI
Okay 4.6

Snacks & beverages on a 1 hour flight. Very nice crew

Older plane, no entertainment

ATL
MBJ
Excellent 8.0

I love Delta, especially their newer planes that have screens in the backs of headrests and free movies.

Leg room is never enough. I'm 6'1".

Wed, Apr 18
ORD
IAD
6h 29m
Sun, Apr 22
IAD
ORD
5h 19m
Trip: 5 days
7.2GoodShow reviews
Overall 7.2 Good
Based on 27334 reviews
Overall
7.3
Boarding
7.5
Comfort
7.1
Crew
7.8
Entertainment
6.7
Food
6.6
SDF
DFW
Mediocre 2.0

Made us wait over 2 hours on the tarmac before take off inside the airplane.

SFO
LAX
Excellent 10.0

great flight

MAD
JFK
Good 6.0

Films, TV screens did not work

DFW
SAT
Okay 5.6

The flight was so short we did not even get a snack, only an offer of a bottle of water; this was simply due to to short length of the flight. Basic economy had my wife and I 16 rows apart each in a middle seat. I was in the very last seat on the plane. Flight attendants were attentive and surprisingly very nice, legroom is non-existent (same as every flight in plain coach).

High cost to prebook seats was twice what Spirit or Frontier would charge

ORD
DFW
Excellent 8.0

Very timely, didn't take forever getting off the ground

As a first time traveler, it would have been nice to have a little help with navigating the airport once I arrived.

Sat, Feb 24
ORD
IAD
16h 29m
Sun, Feb 25
IAD
ORD
2h 03m
Trip: 2 days
7.0GoodShow reviews
Overall 7.0 Good
Based on 68 reviews
Overall
7.2
Boarding
7.4
Comfort
6.9
Crew
7.7
Entertainment
6.5
Food
6.4
ORD
IAD
Good 6.0

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

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 10.0

The crew was very polite at every moment

I really liked everything

ORD
IAD
Mediocre 2.0

Flight delayed- missed connection. No easy way to get Home to Vermont. Flew to Boston and rented car!

Tue, Apr 10
ORD
IAD
1h 45m
Wed, Apr 18
IAD
ORD
1h 59m
Trip: 9 days
7.0GoodShow reviews
Overall 7.0 Good
Based on 68 reviews
Overall
7.2
Boarding
7.4
Comfort
6.9
Crew
7.7
Entertainment
6.5
Food
6.4
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
Good 6.6

Service

Total disaster due to some snow, excessive delays

ORD
IAD
Mediocre 3.0

This flight was delayed around 3 hours.

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

Fri, Apr 20
ORD
IAD
1h 45m
Sun, Apr 22
IAD
ORD
5h 19m
Trip: 3 days
Overall 0.0 Poor
Based on 0 reviews
Tue, Apr 10
ORD
IAD
5h 35m
Sat, Apr 14
IAD
ORD
4h 48m
Trip: 5 days
7.2GoodShow reviews
Overall 7.2 Good
Based on 27334 reviews
Overall
7.3
Boarding
7.5
Comfort
7.1
Crew
7.8
Entertainment
6.7
Food
6.6
BCN
JFK
Mediocre 2.0

NOTHING !! I lost my flight because in the email I received you all put the wrong airline on it and nobody took responsability for it . I ended up paying $311.00 to get the next flight back to Austin .

In the email it was stated that my first flight was with British Airways, so i wasted time making the wrong line . Only to get to the counter and waste more tome trying to find me in the system to then tell me my flight is with American Airline . I double check my email where it clearly shows: 1st flight-British Airway and 2nd flight-American Airline . This is not acceptable, nobody wants to take responsability for sending me the wrong information in the email. Had I know both of my flights were with American Airline I wouldn’t lost my plane because I would make the right line to begin with .

JFK
AUS
Mediocre 2.0

I lost money, I came back a day later wish it wasn’t plan and is NOT ok .

kieytcha@gmail.com

DFW
SAT
Okay 5.6

The flight was so short we did not even get a snack, only an offer of a bottle of water; this was simply due to to short length of the flight. Basic economy had my wife and I 16 rows apart each in a middle seat. I was in the very last seat on the plane. Flight attendants were attentive and surprisingly very nice, legroom is non-existent (same as every flight in plain coach).

High cost to prebook seats was twice what Spirit or Frontier would charge

MAD
JFK
Good 6.0

Films, TV screens did not work

MAD
PHL
Good 7.0

Flight was not full.

Luggage was very late and arrived at the wrong carousel.

Wed, Apr 11
ORD
IAD
1h 45m
Wed, Apr 18
IAD
ORD
1h 59m
Trip: 8 days
7.0GoodShow reviews
Overall 7.0 Good
Based on 68 reviews
Overall
7.2
Boarding
7.4
Comfort
6.9
Crew
7.7
Entertainment
6.5
Food
6.4
ORD
IAD
Mediocre 3.3

Go

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 10.0

The crew was very polite at every moment

I really liked everything

ORD
IAD
Mediocre 3.0

This flight was delayed around 3 hours.

Thu, Feb 1
MDW
IAD
4h 34m
Mon, Feb 5
IAD
MDW
3h 45m
Trip: 5 days
7.8GoodShow reviews
Overall 7.8 Good
Based on 15315 reviews
Overall
8.0
Boarding
8.1
Comfort
7.7
Crew
8.4
Entertainment
7.5
Food
7.3
BNA
BOS
Mediocre 2.0

Delta staff taking care of rude/beligerant guests first vedore guests patiently/kindly waiting in line ... children watched that behavior and the jerks recieved special treatment. Flight staff ripped up guests boarding pass in face. Staff allowed ys to board plane and put our bags under plane and then crew timed out before take off. Never will use Delta again.

ATL
BWI
Okay 4.6

Snacks & beverages on a 1 hour flight. Very nice crew

Older plane, no entertainment

LGA
PIT
Excellent 10.0

Our original flight was delayed and Marika, at the Delta gate of another flight to the same city, was able to get us on the flight that was going to our city. We were so grateful to get home before the winter storm! We appreciate your staff and the help their quick, efficient manner to get us on a new flight!

DTW
ATL
Excellent 8.0

I love Delta, especially their newer planes that have screens in the backs of headrests and free movies.

Leg room is never enough. I'm 6'1".

LAX
DEN
Excellent 10.0

Excellent piloting and cabin crew.

Wed, Apr 11
ORD
IAD
6h 29m
Sat, Apr 14
IAD
ORD
4h 48m
Trip: 4 days
7.2GoodShow reviews
Overall 7.2 Good
Based on 27334 reviews
Overall
7.3
Boarding
7.5
Comfort
7.1
Crew
7.8
Entertainment
6.7
Food
6.6
DFW
SAT
Okay 5.6

The flight was so short we did not even get a snack, only an offer of a bottle of water; this was simply due to to short length of the flight. Basic economy had my wife and I 16 rows apart each in a middle seat. I was in the very last seat on the plane. Flight attendants were attentive and surprisingly very nice, legroom is non-existent (same as every flight in plain coach).

High cost to prebook seats was twice what Spirit or Frontier would charge

ORD
DFW
Excellent 8.0

Very timely, didn't take forever getting off the ground

As a first time traveler, it would have been nice to have a little help with navigating the airport once I arrived.

SDF
DFW
Mediocre 2.0

Made us wait over 2 hours on the tarmac before take off inside the airplane.

SFO
LAX
Excellent 10.0

great flight

BCN
JFK
Mediocre 2.0

NOTHING !! I lost my flight because in the email I received you all put the wrong airline on it and nobody took responsability for it . I ended up paying $311.00 to get the next flight back to Austin .

In the email it was stated that my first flight was with British Airways, so i wasted time making the wrong line . Only to get to the counter and waste more tome trying to find me in the system to then tell me my flight is with American Airline . I double check my email where it clearly shows: 1st flight-British Airway and 2nd flight-American Airline . This is not acceptable, nobody wants to take responsability for sending me the wrong information in the email. Had I know both of my flights were with American Airline I wouldn’t lost my plane because I would make the right line to begin with .

Sat, Apr 14
ORD
IAD
1h 45m
Wed, Apr 18
IAD
ORD
1h 59m
Trip: 5 days
7.0GoodShow reviews
Overall 7.0 Good
Based on 68 reviews
Overall
7.2
Boarding
7.4
Comfort
6.9
Crew
7.7
Entertainment
6.5
Food
6.4
ORD
IAD
Mediocre 3.3

Go

ORD
IAD
Mediocre 2.0

Flight delayed- missed connection. No easy way to get Home to Vermont. Flew to Boston and rented car!

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

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, Feb 2
ORD
IAD
3h 42m
Sat, Feb 3
IAD
ORD
4h 06m
Trip: 2 days
7.8GoodShow reviews
Overall 7.8 Good
Based on 15315 reviews
Overall
8.0
Boarding
8.1
Comfort
7.7
Crew
8.4
Entertainment
7.5
Food
7.3
DTW
ATL
Excellent 8.0

I love Delta, especially their newer planes that have screens in the backs of headrests and free movies.

Leg room is never enough. I'm 6'1".

JFK
TPA
Good 6.6

We landed earlier than expected

Bathroom was very smelly

LAX
DEN
Excellent 10.0

Excellent piloting and cabin crew.

ATL
BWI
Okay 4.6

Snacks & beverages on a 1 hour flight. Very nice crew

Older plane, no entertainment

ATL
MEX
Excellent 8.3

Tudo conforme esperado em um voo da Delta.

Nada a reclamar.

Tue, Apr 17
ORD
IAD
4h 30m
Sat, Apr 21
IAD
ORD
4h 27m
Trip: 5 days
7.2GoodShow reviews
Overall 7.2 Good
Based on 27334 reviews
Overall
7.3
Boarding
7.5
Comfort
7.1
Crew
7.8
Entertainment
6.7
Food
6.6
TPA
DFW
Good 6.3

Decent boarding group, same snacks, same flight attendants (who were very nice)

My only gripe is that paying for an assigned seat is only allowed 48 hours before takeoff and costs at least $30, twice what Spirit charges to allow you to select a seat during booking, so it is worse. No one watched us to ensure that we didn’t use the overhead bins (a stipulation of the fare) but we did comply anyway. We chose to take our chances and were assigned seats at the gate 16 rows apart and both in the middle seat.

DFW
PHL
Mediocre 3.0

They separated my bags, so I had to wait in Philadelphia for my bag to arrive on next flight 2 1/2 hours latter. Not happy after flying from Sydney.

MAD
JFK
Good 6.0

Films, TV screens did not work

ORD
DFW
Excellent 8.0

Very timely, didn't take forever getting off the ground

As a first time traveler, it would have been nice to have a little help with navigating the airport once I arrived.

DFW
BMI
Mediocre 3.6

I didn’t make this flight.

Tue, Apr 17
ORD
IAD
1h 44m
Wed, Apr 25
IAD
ORD
2h 05m
Trip: 9 days
7.0GoodShow reviews
Overall 7.0 Good
Based on 68 reviews
Overall
7.2
Boarding
7.4
Comfort
6.9
Crew
7.7
Entertainment
6.5
Food
6.4
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
Mediocre 3.3

Go

ORD
IAD
Mediocre 3.0

This flight was delayed around 3 hours.

ORD
IAD
Excellent 9.0

Had to pay for movies and snacks.

Sat, Feb 3
ORD
IAD
4h 01m
Sun, Feb 4
IAD
ORD
5h 49m
Trip: 2 days
7.8GoodShow reviews
Overall 7.8 Good
Based on 15315 reviews
Overall
8.0
Boarding
8.1
Comfort
7.7
Crew
8.4
Entertainment
7.5
Food
7.3
JFK
TPA
Good 6.6

We landed earlier than expected

Bathroom was very smelly

BNA
BOS
Mediocre 2.0

Delta staff taking care of rude/beligerant guests first vedore guests patiently/kindly waiting in line ... children watched that behavior and the jerks recieved special treatment. Flight staff ripped up guests boarding pass in face. Staff allowed ys to board plane and put our bags under plane and then crew timed out before take off. Never will use Delta again.

MEX
ATL
Good 7.0

Beautiful plane, great entertainment system, two bathrooms for economy class, decent food

CMH
ATL
Okay 5.0

As poltronas estavam OK.

No voo MEX-GRU o Sistema de Entretenimento nao funcionou por quase 3hs. A refeicao foi muito fraca, tamto no jantar quanto no café da manhã. Onde ja se viu comer feijão preto com onelete no cafe da manhã??? Deveriam pensar no tipo de passageiro q estao atendendo.

ATL
MBJ
Excellent 8.0

I love Delta, especially their newer planes that have screens in the backs of headrests and free movies.

Leg room is never enough. I'm 6'1".

Wed, Apr 18
ORD
IAD
5h 35m
Sat, Apr 21
IAD
ORD
4h 27m
Trip: 4 days
7.2GoodShow reviews
Overall 7.2 Good
Based on 27334 reviews
Overall
7.3
Boarding
7.5
Comfort
7.1
Crew
7.8
Entertainment
6.7
Food
6.6
ORD
DFW
Excellent 8.0

Very timely, didn't take forever getting off the ground

As a first time traveler, it would have been nice to have a little help with navigating the airport once I arrived.

MAD
PHL
Good 7.0

Flight was not full.

Luggage was very late and arrived at the wrong carousel.

TPA
DFW
Good 6.3

Decent boarding group, same snacks, same flight attendants (who were very nice)

My only gripe is that paying for an assigned seat is only allowed 48 hours before takeoff and costs at least $30, twice what Spirit charges to allow you to select a seat during booking, so it is worse. No one watched us to ensure that we didn’t use the overhead bins (a stipulation of the fare) but we did comply anyway. We chose to take our chances and were assigned seats at the gate 16 rows apart and both in the middle seat.

DFW
BMI
Mediocre 3.6

I didn’t make this flight.

BCN
JFK
Mediocre 2.0

NOTHING !! I lost my flight because in the email I received you all put the wrong airline on it and nobody took responsability for it . I ended up paying $311.00 to get the next flight back to Austin .

In the email it was stated that my first flight was with British Airways, so i wasted time making the wrong line . Only to get to the counter and waste more tome trying to find me in the system to then tell me my flight is with American Airline . I double check my email where it clearly shows: 1st flight-British Airway and 2nd flight-American Airline . This is not acceptable, nobody wants to take responsability for sending me the wrong information in the email. Had I know both of my flights were with American Airline I wouldn’t lost my plane because I would make the right line to begin with .

Wed, Apr 18
ORD
IAD
1h 45m
Wed, Apr 25
IAD
ORD
2h 03m
Trip: 8 days
7.0GoodShow reviews
Overall 7.0 Good
Based on 68 reviews
Overall
7.2
Boarding
7.4
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 6.6

Service

Total disaster due to some snow, excessive delays

ORD
IAD
Excellent 9.0

Had to pay for movies and snacks.

ORD
IAD
Mediocre 3.0

This flight was delayed around 3 hours.

ORD
IAD
Mediocre 2.0

Again- nothing

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

Mon, Feb 5
ORD
IAD
4h 25m
Wed, Feb 7
IAD
ORD
5h 55m
Trip: 3 days
7.8GoodShow reviews
Overall 7.8 Good
Based on 15315 reviews
Overall
8.0
Boarding
8.1
Comfort
7.7
Crew
8.4
Entertainment
7.5
Food
7.3
ATL
BWI
Okay 4.6

Snacks & beverages on a 1 hour flight. Very nice crew

Older plane, no entertainment

JFK
TPA
Good 6.6

We landed earlier than expected

Bathroom was very smelly

LGA
PIT
Excellent 10.0

Our original flight was delayed and Marika, at the Delta gate of another flight to the same city, was able to get us on the flight that was going to our city. We were so grateful to get home before the winter storm! We appreciate your staff and the help their quick, efficient manner to get us on a new flight!

LAX
DEN
Excellent 10.0

Excellent piloting and cabin crew.

DFW
LGA
Excellent 10.0

Good service, more leg room than American Airlines.

Everything was good.

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Chicago to Washington Dulles Intl Flight Information

Avg. Flight Duration 1h 52m
Flights Arrive in Washington Dulles Intl
Flights Depart from Chicago
Flight Price $131
Distance 572 miles
Airlines American Airlines, United, Delta
*
Prices are per person and are for e–tickets and include all taxes & fees in USD.

We attempt to get accurate prices, however, prices are not guaranteed.

Here's why:

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Why aren’t prices accurate 100% of the time?
Prices on airline seats, hotel rooms and car rentals can change frequently. Several people may also be trying to buy the same travel option simultaneously. As a result, you may find, on occasion, that certain prices are no longer available.

If you have more questions or if you have a bad price to report to us,
please send us an and someone from our team will get back to you promptly.

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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.