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Route · GSP → DCA · 2020–2025 BTS data

Greer to Washington

According to PlainFlights' route traffic ranking (BTS On-Time Performance total flights), GSP to DCA (Greer to Washington) ranks #2650 of 4927 tracked domestic routes by total flights (most flights = #1).

Data updated 2026-06-13

78.8%
On-time
-0.2 pts
vs US avg
79 min
Delay when late
4,567
Flights
#2650 of 4927
Corpus placement

Cancelled

4.0%

Best Month

Sep 2024 86%

Worst Month

Dec 2024 59%

Distance

396 mi

Carriers

8

Monthly Performance

Recent 24 months of route data.

Period Flights Delayed Cancelled Diverted Carriers
Dec 2025 75 23 4 0 OH
Nov 2025 84 24 4 1 OH,YX
Oct 2025 90 19 0 0 OH,YX
Sep 2025 90 28 0 0 OH,YX
Aug 2025 83 18 4 0 AA,MQ,OH
Jul 2025 88 25 12 0 OH,MQ
Jun 2025 90 25 13 0 OH
May 2025 88 29 3 0 OH
Apr 2025 86 17 2 0 OH
Mar 2025 88 29 6 0 OH
Feb 2025 69 23 4 2 OH
Jan 2025 66 14 6 0 OH
Dec 2024 85 35 1 2 OH
Nov 2024 82 15 0 1 OH
Oct 2024 88 13 0 0 OH
Sep 2024 86 12 2 1 OH
Aug 2024 87 13 2 1 OH
Jul 2024 84 27 2 1 OH
Jun 2024 80 15 2 0 OH
May 2024 85 22 2 0 OH
Apr 2024 82 23 0 0 OH
Mar 2024 82 14 0 0 OH,YX
Feb 2024 78 12 1 0 OH,YX
Jan 2024 83 16 9 0 YX,OH

GSP–DCA seasonal on-time pattern

Best: October (86.7%) · weakest: July (70.6%)

65%70%75%80%85%90% JanFebMarAprMayJunJulAugSepOctNovDec 73.3%

Strongest calendar month

October

86.7% on-time · ~78 flights/mo

Busiest calendar month

May

~86 flights/mo avg

Weakest calendar month

July

70.6% on-time · ~85 flights/mo

Cancellation Rate

4.0%

79 of 1,999 flights

Diversion Rate

0.5%

9 of 1,999 flights

Explore origin & destination

On-time and delay data for the airports this route connects.

GSP - Greer

Full on-time, delay-cause, and seasonal performance for Greer, SC.

GSP on-time profile

DCA - Washington

Full on-time, delay-cause, and seasonal performance for Washington, DC.

DCA on-time profile

Compare the two airports

See GSP and DCA side by side on delays, cancellations, and reliability.

Compare GSP vs DCA

Origin-hub reliability standing

Mid-pack among GSP departures

From GSP, this corridor sits with 5 other 75–85% on-time routes out of 14 tracked departures, not the hub's reliability leaders (9 at ≥85%) and not the softest ( 0 below 75%). Destination: Washington · fleet on-time rank #3578 of 4927.

What the Data Says About GSP to DCA

4,567 tracked flights put the GSP to DCA pairing (Greer to Washington) at a 78.8% on-time rate, squarely in line with the wider network. Delays that do occur run 78.6 minutes on average. Across the 396-mile route and its 8 carriers, the trailing 24 months show 4.0% cancelled and 0.5% diverted (1,999 flights sampled).

The monthly split is wide on this route: Sep 2024 posted the strongest performance at 86% on-time, while Dec 2024 came in at just 59% - a 27-point swing worth factoring into travel timing.

On the multi-year calendar, GSP–DCA peaks in October at 86.7% on-time while May carries the heaviest traffic (~86 flights per month) ; the softest month is July at 70.6%, a 16.1-point swing that repeats because the corridor's weather and holiday mix stays stable year to year.

Frequently Asked Questions

Where does GSP to DCA rank among US routes by traffic? ▼
According to PlainFlights' route traffic ranking, GSP to DCA ranks #2650 of 4927 tracked domestic routes by total flights (most flights = #1). That ordinal matches our busiest-routes listing (total_flights DESC). See /methodology#corpus-placement for the exact sort basis.
How often are flights delayed from GSP to DCA? ▼
Flights from Greer to Washington have a 78.8% on-time rate based on 4,567 flights. The average delay is 78.6 minutes. The best recent month was Sep 2024 with 86% on-time.
What is the cancellation rate for GSP to DCA? ▼
Over the last 24 months, 4.0% of flights on this route were cancelled (79 of 1,999 flights) and 0.5% were diverted.
How far is the flight from GSP to DCA? ▼
The flight distance from Greer (GSP) to Washington (DCA) is approximately 396 miles. This route is served by 8 carriers.
When is the best time to fly from GSP to DCA? ▼
The best recent month for on-time performance was Sep 2024 (86% on-time). The worst was Dec 2024 (59% on-time). Consider booking during months with historically better performance.

Airports on this route

GSP Airport

Greer
DCA Airport

Washington
Data source

Data Source: Bureau of Transportation Statistics (BTS), On-Time Performance Data. Statistics reflect cumulative performance across all available reporting periods.

Read our methodology - how this data is sourced, computed, and verified.

Using GSP–DCA data

GSP–DCA is mid-pack at 78.8% on-time; month and carrier mix move more than the corridor headline.

  • Compare GSP and DCA airport profiles: delay causes and top routes differ even on the same corridor. GSP airport
  • If your dates flex, October (86.7% on-time) beats July (70.6%) on this corridor. Seasonal chart
  • 4 other routes post a similar 78.8% on-time rate; compare before you commit to this pairing. Similar routes

On-time rate reflects the BTS historical average across all reporting carriers on this origin–destination pair, not any single flight or booking recommendation.

Data sourced from U.S. Department of Transportation Bureau of Transportation Statistics (BTS) On-Time Performance data. See our methodology for details. Retrieved and formatted by PlainFlights

Every figure on PlainFlights is rendered directly from BTS On-Time Performance data, no number is typed in by an editor. This page aggregates this specific route's on-time performance and monthly trend, live from the dataset. See our editorial standards & corrections policy, the methodology behind these numbers, or report a data error.