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
US DOT T-100 · filed dataIn April 2026, Mesa Airlines operated the most departures, one of 5 carriers flying nonstop IAD–SBN; the Embraer E175 was the most common aircraft at 77% of departures; flights ran 69% full.
Departures
78
April 2026
Seats
6,534
both directions
Passengers
4,537
both directions
Load factor
69.4%
passengers ÷ seats
Who flies IAD–SBN?
Mesa Airlines operated the most nonstop IAD–SBN departures in April 2026 (58), one of 5 carriers on the route.
- YV
Mesa Airlines
58 departures · 4,132 seats
Share of departures74.4%71.7%
Load
- MX
Breeze Airways
16 departures · 2,192 seats
Share of departures20.5%68.7%
Load
- YX
Republic Airways
2 departures · 152 seats
Share of departures2.6%45.4%
Load
- LF
Contour Airlines d/b/a One Jet Shuttle
1 departures · 8 seats
Share of departures1.3%0.0%
Load
- OO
SkyWest Airlines
1 departures · 50 seats
Share of departures1.3%0.0%
Load
What plane flies IAD–SBN?
In April 2026, the Embraer E175 flew 77% of IAD–SBN departures — more than any other aircraft type.
- Embraer E175
60 departures · 70.8% load
76.9% - Airbus A220-300
16 departures · 68.7% load
20.5% - Bombardier CRJ-200
1 departures · 0.0% load
1.3% - Cessna 510 Mustang
1 departures · 0.0% load
1.3%
How has IAD–SBN traffic changed?
Nonstop IAD–SBN departures fell from 80 in May 2025 to 78 in April 2026.
Monthly nonstop IAD–SBN traffic, trailing 12 months through April 2026. Bars scale to the busiest month; months with no filed service show as zero.
May 2025
80 departures · 5,277 passengers
76.2%
Load
June 2025
76 departures · 5,107 passengers
78.6%
Load
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
By direction
The DOT files each direction separately — they rarely match.
IAD → SBN
68.4% full
40 departures · 2,254 passengers
SBN → IAD
70.5% full
38 departures · 2,283 passengers
Nonstop IAD–SBN traffic has been filed with the US DOT since 2025.
Source: US DOT BTS Form 41 T-100 Segment (All Carriers). Data through April 2026; filings from 2025. Public domain (US Government work). The DOT publishes roughly three months in arrears.
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 April 2026, the Embraer E175 flew the largest share of departures (76.9%), followed by the Airbus A220-300 (20.5%).
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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