SEARCH ONE AND DONE. - Compare hundreds of travel sites at once.
Choose where to book.
Find deals from over 400 airlines worldwide.

Cheap Flights from Washington to Boston (IAD - BOS)

DepartReturn
1 adult
Note: some airlines charge for infants in laps.
The price shown for each flight will be the average for all passengers including any infants.
Choose Sites to Compare vs. KAYAK

Best fares from IAD to BOS (Found by others)

Sun Mon Tue Wed Thu Fri Sat
      1 $274 2 $244 3 $269 4 $358
5 $269 6 $207 7 $223 8 $207 9 $223 10 $293 11 $223
12 $175 13 $277 14 $147 15 $147 16 $158 17 $182 18 $147
19 $212 20 $153 21 $117 22 $117 23 $132 24 $148 25 $125
26 $212 27 $143 28 $128 29 $128 30 $133 31 $135  
KAYAK searches hundreds of sites to find the best rate for your next flight from Washington to Boston. Get the best flight deal for your Boston trip!
Here's how it works. Search KAYAK for a flight ticket from Washington to Boston. Sort, filter and compare results on one web page. Then book your plane ticket direct on the airline or travel agent site of your choice!
Direct flights IAD to BOS on United
Flight # Depart IAD Arrive BOS Sun Mon Tue Wed Thu Fri Sat Valid Between
1580 8:15 am 9:51 am Oct 28 - Oct 28
1210 8:20 am 9:56 am Nov 2 - Nov 2
1510 8:20 am 9:56 am Oct 27 - Oct 27
1526 8:20 am 9:56 am Oct 29 - Oct 30
1555 8:20 am 9:56 am Oct 31 - Oct 31
1623 8:20 am 9:56 am Nov 3 - Nov 21
1634 8:20 am 9:56 am Nov 4 - Nov 4
1692 8:20 am 9:56 am Nov 5 - Nov 5
3770 8:20 am 9:55 am Nov 8 - Nov 22
3770 8:20 am 9:55 am Nov 1 - Nov 1
764 8:20 am 9:55 am Oct 26 - Oct 26
1686 8:24 am 9:59 am Oct 12 - Oct 12
1686 8:24 am 9:59 am Oct 19 - Oct 19
764 8:30 am 10:04 am Sep 27 - Oct 25
3760 12:15 pm 1:45 pm Oct 26 - Nov 1
3760 12:15 pm 1:45 pm Nov 2 - Nov 17
1070 12:20 pm 1:53 pm Sep 27 - Oct 11
1070 12:20 pm 1:53 pm Oct 25 - Oct 25
1255 12:23 pm 1:56 pm Oct 18 - Oct 18
1294 12:23 pm 1:56 pm Sep 30 - Oct 14
1294 12:23 pm 1:56 pm Oct 8 - Oct 12
1294 12:23 pm 1:56 pm Oct 16 - Oct 24
1294 12:23 pm 1:56 pm Oct 15 - Oct 22
1046 4:55 pm 6:32 pm Oct 25 - Oct 25
1077 4:55 pm 6:32 pm Oct 18 - Oct 18
1077 4:55 pm 6:32 pm Oct 11 - Oct 11
1210 4:55 pm 6:32 pm Oct 10 - Oct 10
1210 4:55 pm 6:32 pm Oct 6 - Oct 13
1210 4:55 pm 6:32 pm Oct 17 - Oct 24
1210 4:55 pm 6:32 pm Oct 20 - Oct 20
1277 4:55 pm 6:32 pm Oct 15 - Oct 15
1277 4:55 pm 6:32 pm Oct 22 - Oct 22
1517 4:55 pm 6:32 pm Oct 9 - Oct 14
1517 4:55 pm 6:32 pm Oct 16 - Oct 23
1517 4:55 pm 6:32 pm Oct 12 - Oct 12
1517 4:55 pm 6:32 pm Oct 19 - Oct 19
399 4:55 pm 6:31 pm Oct 8 - Oct 8
3741 4:59 pm 6:33 pm Nov 3 - Nov 10
3741 4:59 pm 6:33 pm Oct 28 - Oct 31
3741 4:59 pm 6:33 pm Oct 27 - Oct 27
3770 4:59 pm 6:33 pm Oct 26 - Oct 26
3770 4:59 pm 6:33 pm Nov 2 - Nov 2
764 5:15 pm 6:49 pm Nov 8 - Nov 22
764 5:15 pm 6:49 pm Nov 1 - Nov 1
1648 10:04 pm 11:36 pm Nov 8 - Nov 8
1648 10:04 pm 11:36 pm Nov 1 - Nov 1
3803 10:04 pm 11:35 pm Nov 3 - Nov 24
3803 10:04 pm 11:35 pm Oct 26 - Oct 26
3803 10:04 pm 11:35 pm Nov 2 - Nov 20
3803 10:04 pm 11:35 pm Oct 28 - Oct 28
3803 10:04 pm 11:35 pm Nov 4 - Nov 18
3803 10:04 pm 11:35 pm Oct 29 - Oct 31
3803 10:04 pm 11:35 pm Oct 30 - Oct 30
3803 10:04 pm 11:35 pm Nov 7 - Nov 21
3803 10:04 pm 11:35 pm Oct 27 - Oct 27
1046 10:08 pm 11:41 pm Oct 23 - Oct 23
1046 10:08 pm 11:41 pm Oct 16 - Oct 21
1191 10:08 pm 11:41 pm Oct 22 - Oct 22
1191 10:08 pm 11:41 pm Oct 24 - Oct 24
1255 10:08 pm 11:41 pm Oct 14 - Oct 14
1277 10:08 pm 11:41 pm Oct 8 - Oct 8
1515 10:08 pm 11:41 pm Oct 19 - Oct 19
1515 10:08 pm 11:41 pm Oct 20 - Oct 20
1569 10:08 pm 11:41 pm Oct 10 - Oct 10
1575 10:08 pm 11:41 pm Oct 9 - Oct 9
1636 10:08 pm 11:41 pm Oct 13 - Oct 13
1685 10:08 pm 11:41 pm Oct 11 - Oct 18
1714 10:08 pm 11:41 pm Oct 17 - Oct 17
1714 10:08 pm 11:41 pm Oct 15 - Oct 15
1763 10:08 pm 11:41 pm Oct 12 - Oct 12
352 10:08 pm 11:39 pm Oct 25 - Oct 25