Dulles (IAD) to South Bend (SBN)
Flight time
≈ 1h 48m
Bearing
295° NW
Dulles (IAD) to South Bend (SBN) is 504 miles (811 km) as the crow flies — the great-circle baseline most distance-based mileage programs credit.
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What actually flies IAD–SBN
Filed traffic dataIn June 2026, Mesa Airlines operated the most departures, one of 4 carriers flying nonstop IAD–SBN; the Embraer E175 was the most common aircraft at 75% of departures; flights ran 67% full.
Departures
77
June 2026
Seats
6,714
both directions
Passengers
4,488
both directions
Load factor
66.8%
RPM ÷ ASM
Who flies IAD–SBN?
Mesa Airlines operated the most nonstop IAD–SBN departures in June 2026 (56), one of 4 carriers on the route.
- YV
56 departures · 4,046 seats
Share of departures72.7%72.0%
Load
- MX
18 departures · 2,466 seats
Share of departures23.4%58.9%
Load
- YX
2 departures · 152 seats
Share of departures2.6%80.3%
Load
- OO
1 departures · 50 seats
Share of departures1.3%0.0%
Load
What plane flies IAD–SBN?
In June 2026, the Embraer E175 flew 75% of IAD–SBN departures — more than any other aircraft type.
- Embraer E175
58 departures · 72.3% load
75.3% - Airbus A220-300
18 departures · 58.9% load
23.4% - Bombardier CRJ-200
1 departures · 0.0% load
1.3%
How has IAD–SBN traffic changed?
Nonstop IAD–SBN departures rose from 71 in July 2025 to 77 in June 2026.
Monthly nonstop IAD–SBN traffic, trailing 12 months through June 2026. Bars scale to the busiest month; months with no filed service show as zero.
July 2025
71 departures · 4,835 passengers
78.6%
Load
August 2025
80 departures · 4,935 passengers
71.5%
Load
September 2025
78 departures · 4,772 passengers
69.1%
Load
October 2025
81 departures · 4,765 passengers
67.7%
Load
November 2025
72 departures · 3,483 passengers
56.5%
Load
December 2025
81 departures · 4,070 passengers
57.4%
Load
January 2026
79 departures · 3,289 passengers
46.9%
Load
February 2026
72 departures · 3,448 passengers
54.1%
Load
March 2026
74 departures · 4,110 passengers
63.0%
Load
April 2026
78 departures · 4,537 passengers
69.4%
Load
May 2026
78 departures · 4,522 passengers
66.3%
Load
June 2026
77 departures · 4,488 passengers
66.8%
Load
By direction
Each direction is filed separately — they rarely match.
SBN → IAD
70.5% full
39 departures · 2,403 passengers
IAD → SBN
63.1% full
38 departures · 2,085 passengers
Nonstop IAD–SBN traffic has been filed since 2025.
Source: US DOT BTS Form 41 T-100 Segment (All Carriers). Data through June 2026; filings from 2025. Public domain (US Government work).
The airports
Frequently asked
How far is Dulles (IAD) from South Bend (SBN)?
IAD to SBN is 504 miles (811 km / 438 nautical miles) measured great-circle — the shortest path over the surface of the Earth.
How long is the flight from IAD to SBN?
A nonstop covers the 504-mile great-circle distance in roughly 1h 48m of block time, before winds. Actual schedules vary a few percent by direction and aircraft.
What plane flies IAD–SBN?
In June 2026, the Embraer E175 flew the largest share of departures (75.3%), followed by the Airbus A220-300 (23.4%).
What mileage do I earn flying IAD–SBN?
Distance-based programs credit off the 504-mile great-circle figure, then apply your fare-class earning rate. Revenue-based programs credit off the fare instead.
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