Booking odds · April
Upper Onion Creek Group Site in April: How Hard Is It to Book?
The verdict
Booking difficulty 10 out of 10. Gone within minutes of release. Bring a plan B.
Popular April dates usually sell out within a few days of release.
Upper Onion Creek Group Site in April scores 10 out of 10 for booking difficulty — lottery-hard. Gone within minutes of release. Bring a plan B.
Across the last 3 years of reservation history, the typical April booking was locked in about 167 days before arrival, with the campground running roughly 104% full that month. The lightest arrival day is Wednesday, so shifting to a midweek start is the single easiest way to improve your odds.
How far ahead people book
Weekend vs. weekday demand
Best odds: arrivals are lightest on Wednesday in April. A midweek arrival is your easiest booking.
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When April reservations open
Reservations for Upper Onion Creek Group Site in April 2027 operate on a rolling 6-month window releasing at 7:00 AM ET.
April 1 stays open
October 1, 2026
at 7:00 AM ET
Release style
6-Month Rolling Window
Releases daily 6 months ahead at 7:00 AM ET
Campsites for April 1, 2027 become bookable on October 1, 2026 at 7:00 AM ET. Each subsequent date throughout April releases day-by-day exactly 6 months prior to arrival.
Facility note: Standard Recreation.gov 6-month rolling window: sites become bookable 6 months before arrival at 7:00 AM ET.
How much does it cost to camp at Upper Onion Creek Group Site?
Group Site A (Equestrian Site, max 20 people): $100. Group Site B (max 25 people): $125.
Fee details as listed on Recreation.gov. Rates and passes change by season, so confirm the current price on Recreation.gov before you book.
Easier nearby options in April
If your dates are flexible, these nearby campgrounds are typically easier to book.
Upper Onion Creek Group Site in April: common questions
- How hard is it to book Upper Onion Creek Group Site in April?
- Upper Onion Creek Group Site rates 10 out of 10 for April — Lottery-hard. Gone within minutes of release. Bring a plan B.
- How far in advance should I book Upper Onion Creek Group Site for April?
- The typical April reservation was made about 167 days before arrival, so plan to book as early as your dates allow.
- When do April reservations open for Upper Onion Creek Group Site?
- Reservations for Upper Onion Creek Group Site in April 2027 open on a rolling 6-month window. Sites for April 1 become bookable on October 1, 2026 at 7:00 AM ET, with each subsequent day releasing day-by-day 6 months ahead.
- What is the best day to arrive at Upper Onion Creek Group Site in April?
- Arrivals are lightest on Wednesday. A midweek arrival is usually the easiest booking.
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